The expanded form of the given expression (h² − h) + (5h + 6)-(3h² +4h - 9) is -2h² + 15.
What is the expanded form of the given expression?Given the expression in the question;
(h² − h) + (5h + 6) - (3h² + 4h - 9)
Expanding an algebraic expression means to remove any parentheses and simplify the expression as much as possible.
In the given expression, we have three sets of parentheses:
(h² − h)
(5h + 6)
(3h² +4h - 9)
To expand the expression, we will remove the parentheses and simplify the resulting terms.
(h² − h) becomes h² - h
(5h + 6) remains the same
(3h² +4h - 9) becomes 3h² + 4h - 9
Putting all the terms together, we get:
h² - h + 5h + 6 - (3h² + 4h - 9)
Now, we will distribute the negative sign to all the terms inside the parentheses:
h² - h + 5h + 6 - 3h² - 4h + 9
Simplifying further by combining like terms, we get:
h² - 3h² - h + 5h - 4h + 6 + 9
-2h² + 15
Therefore, the expanded form is -2h² + 15.
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A single marble tile measures 25 cm by 20 cm. How many tiles will be required to cover a floor with dimensions 2 meters by 3 meters?
A. 320 tiles
B. 240 tiles
C. 180 tiles
D. 120 tiles
(Please do step by step and the answer)
The number of tiles that will be required to cover a floor with dimensions 2 meters by 3 meters is given as follows:
D. 120 tiles.
How to obtain the area of a rectangle?To obtain the area of a rectangle, you need to multiply its length by its width. The formula for the area of a rectangle is:
Area = Length x Width
The area of the floor is given as follows:
2 x 3 = 6 m².
The area in m² of each tile is given as follows:
0.25 x 0.2 = 0.05.
Hence the number of tiles that will be required to cover the floor is given as follows:
6/0.05 = 120 tiles.
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A person has 50,000 in taxable income for a year and pays a 10 percent income tax rate equal to 5,000 which action would reduce the amount the person paid in taxes to 1,000
The action that would reduce the amount the person paid in taxes to 1,000 is option (D) Receiving a $49,000 tax credit
In this scenario, the person has $50,000 in taxable income and pays a 10% income tax rate, which amounts to $5,000 in taxes. To reduce the tax liability to $1,000, the person needs to receive a tax credit of $49,000. Tax credits directly reduce the amount of tax owed, whereas tax deductions reduce taxable income.
A tax deduction of $4,000 would lower the taxable income to $46,000, resulting in a lower tax liability of $4,600, which is not low enough to reach $1,000. Therefore, a tax credit of $49,000 is needed to reduce the tax liability to $1,000.
Therefore, the correct option is (D) Receiving a $49,000 tax credit
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The given question is incomplete, the complete question is:
A person has $50,000 in taxable income for a year and pays a 10 percent income tax rate, equal to $5,000. Which action would reduce the amount the person paid in taxes to $1,000?
A.Receiving a $4,000 tax deduction
B.Receiving a $4,000 tax credit
C. Receiving a $49,000 tax deduction
D. Receiving a $49,000 tax credit
9. Patricia has 5 cups of rice cereal. She
uses 3 cups of rice cereal to make
granola bars, then borrows 0.5 cup of
rice cereal from her friend. Her recipe
for cereal clusters calls for 3 cups of
rice cereal. Does Patricia have enough?
How much will she have left over, or
how much more will she need?
A Yes, she has 1/2cup left.
B No, she needs 1/2cup more.
C Yes, she 1/4 has cup left.
D No, she needs 1/4cup more.
Therefore, the correct answer is (B) No, she needs 1/2 cup more.
To determine if Patricia has enough rice cereal for her recipe, we need to calculate the total amount of rice cereal she has after all her actions and compare it to the 3 cups required for the cereal clusters.
Initially, Patricia had 5 cups of rice cereal. She used 3 cups to make granola bars, leaving her with 2 cups. She then borrowed 0.5 cup from her friend, which brings her total to 2.5 cups.
Finally, she needs 3 cups of rice cereal for the cereal clusters recipe. Since she only has 2.5 cups, she does not have enough rice cereal and needs to get more. Therefore, the correct answer is B) No, she needs 1/2 cup more.
She then borrows 0.5 cup, so she now has 2 + 0.5 = 2.5 cups.
needs 3 - 2.5 = 0.5 cups more.
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An industrial/organizational psychologist has been consulting with a company that runs weekend job-seeking workshops for the unemployed. She collected data on several issues related to these workshops and, after conducting statistical tests, obtained statistically significant findings. She needs to find a way to evaluate effect size so that she can make recommendations to the company. One of the psychologist's findings is that 18 months after the workshop, a sample of 81 job seekers who received training on using the Internet to find job listings worked more than 30 hours per week an average of 8. 7 months in the last year, with a standard deviation of 4. 1. The typical job seeker works 7. 4 months. The psychologist finds that the estimated Cohen's d is _____, the t statistic is 2. 83, and r^2 is ______. Using Cohen's d and Cohen's guidelines for interpreting the effect size with the estimated Cohen's d, there is a ______ treatment effect. Using r^2 and the extension of Cohen's guidelines for interpreting the effect size using r^2, there is a ______ treatment effect. Another one of the psychologist's findings is that a sample of 81 job seekers who received training on interview skills scored an average of 8. 1 as measured on a 9-point job search motivation scale, with a standard deviation of. 8. The typical job seeker scores 7. 4 points. She finds that the estimated Cohen's d is _____, the t statistic is 7. 78, and r^2 is _____ Using Cohen's d and Cohen's guidelines for interpreting the effect size with the estimated Cohen's d, there is a treatment effect. Using r^2 and the extension of Cohen's guidelines for interpreting the effect size with r^2, there is a ___ treatment effect
The psychologist finds that the estimated Cohen's d is 0.32, the t statistic is 2. 83, and r² is 0.073. Using r² and the extension of Cohen's guidelines for interpreting the effect size using r², there is a small treatment effect. job seeker finds that the estimated Cohen's d is 0.88, the t statistic is 7. 78, and r² is 0.479.Using r² and the extension of Cohen's guidelines for interpreting the effect size with r², there is a large treatment effect
To calculate the estimated Cohen's d, we use the formula
d = (M - M0) / SD
where M is the mean of the treatment group (job seekers who received training on using the Internet to find job listings), M0 is the mean of the control group (typical job seeker), and SD is the pooled standard deviation of the two groups. Using the given values, we have
M = 8.7 months
M0 = 7.4 months
SD = 4.1 months
So, d = (8.7 - 7.4) / 4.1 = 0.32
Using Cohen's guidelines for interpreting effect size with Cohen's d, a value of 0.2 is considered a small effect, 0.5 a medium effect, and 0.8 a large effect. Therefore, with an estimated Cohen's d of 0.32, there is a small treatment effect.
To calculate r², we use the formula
r² = t² / (t² + df)
where t is the t statistic, df is the degrees of freedom (n-2 for a two-group design), and n is the sample size. Using the given values for the Internet training group, we have
t = 2.83
n = 81
df = 79
So, r² = 2.83² / (2.83² + 79) = 0.073
Using the extension of Cohen's guidelines for interpreting effect size with r², a value of 0.01 is considered a small effect, 0.09 a medium effect, and 0.25 a large effect. Therefore, with an r² of 0.073, there is a small treatment effect.
For the job seekers who received training on interview skills, we can calculate Cohen's d and r² in a similar way
d = (M - M0) / SD = (8.1 - 7.4) / 0.8 = 0.88
t = 7.78
n = 81
df = 79
r² = 7.78² / (7.78² + 79) = 0.479
Using Cohen's guidelines for interpreting effect size with Cohen's d, a value of 0.2 is considered a small effect, 0.5 a medium effect, and 0.8 a large effect. Therefore, with an estimated Cohen's d of 0.88, there is a large treatment effect.
Using the extension of Cohen's guidelines for interpreting effect size with r², a value of 0.01 is considered a small effect, 0.09 a medium effect, and 0.25 a large effect. Therefore, with an r² of 0.479, there is a medium to large treatment effect.
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Answer:.317
.091
Small to med
Med
.875
.431
Large
Large
Step-by-step explanation:
what is trigonometry
trigonometry, the branch of mathematics concerned with specific functions of angles and their application to calculations. There are six functions of an angle commonly used in trigonometry. Their names and abbreviations are sine (sin), cosine (cos), tangent (tan), cotangent (cot), secant (sec), and cosecant (csc)
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The exponential function that models the situation in this problem is defined as follows:
y = 3(4)^x.
How to define an exponential function?The standard definition of an exponential function is given as follows:
y = ab^x.
In which:
a is the initial value.b is the rate of change.Three friends start the project, hence the initial value represented by the parameter a is given as follows:
a = 3.
Each day, the number of people in the project is multiplied by four, hence the parameter b is given as follows:
b = 4.
Hence the function is:
y = 3(4)^x.
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a cylinder has a radius of 3 cm and a height of 8 cm. what is the longest segment, in centimeters, that would fit inside the cylinder?
The longest segment that would fit inside the cylinder is approximately 9.06 centimeters.
The longest segment that would fit inside the cylinder would be the diagonal of the cylinder's base, which is equal to the diameter of the base. The diameter of the base is equal to twice the radius, so it is 6 cm. Using the Pythagorean theorem, we can find the length of the diagonal:
[tex]diagonal^2 = radius^2 + height^2 \\diagonal^2 = 3^2 + 8^2 \\diagonal^2 = 9 + 64 \\diagonal^2 = 73 \\diagonal = sqrt(73)[/tex]
Therefore, the longest segment that would fit inside the cylinder is approximately 8.54 cm (rounded to the nearest hundredth).
To find the longest segment that would fit inside the cylinder, we need to calculate the length of the space diagonal of the cylinder. This is the distance between two opposite corners of the cylinder, passing through the center. We can use the Pythagorean theorem in 3D for this calculation.
The terms we'll use are:
- Radius (r): 3 cm
- Height (h): 8 cm
To find the space diagonal (d), we can use the following formula:
[tex]d = \sqrt{r^2 + r^2 + h^2}[/tex]
Plug in the values:
[tex]d = \sqrt{((3 cm)^2 + (3 cm)^2 + (8 cm)^2)} d = \sqrt{(9 cm^2 + 9 cm^2 + 64 cm^2)} d = \sqrt{(82 cm^2)}[/tex]
d ≈ 9.06 cm
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The longest segment that can fit inside the cylinder is. [tex]$\sqrt{73}$ cm[/tex].
The longest segment that can fit inside a cylinder is a diagonal that connects two opposite vertices of the cylinder.
The length of this diagonal by using the Pythagorean theorem.
Pythagorean theorem or Pythagoras' theorem is a fundamental relation in Euclidean geometry between the three sides of a right triangle.
It states that the area of the square whose side is the hypotenuse (the side opposite the right angle) is equal to the sum of the areas of the squares on the other two sides.
This theorem can be written as an equation relating the lengths of the sides a, b and the hypotenuse c, often called the Pythagorean equation:[1]
[tex]{\displaystyle a^{2}+b^{2}=c^{2}.}[/tex]
The theorem is named for the Greek philosopher Pythagoras, born around 570 BC.
The theorem has been proven numerous times by many different methods – possibly the most for any mathematical theorem.
The proofs are diverse, including both geometric proofs and algebraic proofs, with some dating back thousands of years.
Consider a right triangle with legs equal to the radius.
[tex]$r$[/tex] and the height [tex]$h$[/tex] of the cylinder, and with the diagonal as the hypotenuse.
Then, by the Pythagorean theorem, the length of the diagonal is:
[tex]$\sqrt{r^2 + h^2} = \sqrt{3^2 + 8^2} = \sqrt{73}$[/tex]
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Maxine graphs the function m(x) which has a vertex of (-3,4) and passes through the point (-1,-8). Ricardo graphs p(x) = (x+3)² +4
Maxine thinks that both functions have the same axis of symmetry equation. Do you agree or disagree?
Both functions have the same axis of symmetry equation, which is x = -3.
Given that, Maxine graphs a function m(x) which has a vertex of (-3,4) and passes through the point (-1,-8).
Ricardo graphs p(x) = (x+3)² + 4
We need to check if both the function axis of symmetry equation.
So,
Both functions have a vertex of (-3,4), which means that the axis of symmetry must be a vertical line passing through x = -3.
Axis of symmetry = The axis of symmetry is an imaginary straight line that divides the shape into two identical parts or that makes the shape symmetrical.
For the function p(x) = (x+3)² +4, the axis of symmetry is indeed x = -3.
For the function m(x), since it has a vertex of (-3,4), the equation of the axis of symmetry is x = -3.
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Answer:miami is 43431.16 rounded to 43431 because you can't have .16 of a person.
washington dc is 4249.22 which is round to 4249 because you can't have .22 of a person.
and new york city is 27348.99 which is rounded to 27349 because you can't have .99 of a person.
Step-by-step explanation:
im smart and im really good at math
In art class students are mixing black and white paint to make gray paint. Hassan mixes 2 cups of black paint and 3 cups of white paint. Aaliyah mixes 4 cups of black paint and 5 cups of white paint. Use Hassan and Aaliyah’s proportions of black paint to determine whose gray paint will be darker.
Hassan black paint proportion (out of total) as fraction =
Aaliyah black paint proportion (out of total) as fraction =
Hassan’s gray paint will be darker.
Aaliyah’s gray paint will be darker.
The two gray paints will be equally dark.
attempt 1 out of 2
Miracle Jackson
Which is more? (Fraction Comparison)
Apr 11, 8:08:47 AM
Watch help video
In art class students are mixing black and white paint to make gray paint. Hassan mixes 2 cups of black paint and 3 cups of white paint. Aaliyah mixes 4 cups of black paint and 5 cups of white paint. Use Hassan and Aaliyah’s proportions of black paint to determine whose gray paint will be darker.
$x$$y$$($$)$
$=$$\surd$$a^{2}$$a^{b}$
$7$$8$$9$$\div$
$4$
The correct answer is: Aaliyah’s gray paint will be darker.
What is proportion?
In mathematics, a proportion is an equation that states that two ratios are equal. A ratio is a comparison of two numbers or quantities that are usually written in the form of a fraction. For example, the ratio of apples to oranges in a basket could be written as 3/5, meaning that there are three apples for every five oranges.
Hassan mixed 2 cups of black paint and 3 cups of white paint, so the total amount of paint he mixed is 2 + 3 = 5 cups. The proportion of black paint in his mixture is 2/5.
Aaliyah mixed 4 cups of black paint and 5 cups of white paint, so the total amount of paint she mixed is 4 + 5 = 9 cups. The proportion of black paint in her mixture is 4/9.
Comparing the two proportions, we see that Aaliyah's proportion of black paint is greater than Hassan's proportion of black paint, so Aaliyah's gray paint will be darker.
Therefore, the correct answer is: Aaliyah’s gray paint will be darker.
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If it is 15°c outside ang the temperature will drop by 16° in the next 8 hours,What is the temperature after 8 hours
Use the formulas for lowering powers to rewrite the expression in terms of the first power of cosine, as in Example 4.
The expression in terms of the first power of sine is 1 + 3[tex]sin^{4}[/tex]x - 3[tex]sin^{2}[/tex]x - [tex]sin^{6}[/tex]x. The solution has been obtained by using the trigonometric identities.
What are trigonometric identities?
All possible values of the variables in the equation must satisfy the equality condition known as a trigonometric identity. A triangle's side length and angle can be used to express a variety of unusual trigonometric identities.
We are given expression as [tex]cos^{6}[/tex] (x).
This can be written as a cosine function as [tex](cos^{2} x)^{3}[/tex].
We know that [tex]sin^{2}[/tex]x + [tex]cos^{2}[/tex]x = 1.
So, we get
⇒ (1 - [tex]sin^{2}[/tex]x[tex])^{3}[/tex]
⇒ 1 + 3[tex]sin^{4}[/tex]x - 3[tex]sin^{2}[/tex]x - [tex]sin^{6}[/tex]x
Hence, the required expression has been obtained.
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I need this answer asap can someone help??
The shortest driving distance between the stadium and the animal shelter is given as follows:
10 blocks.
How to calculate the distance between two points?Suppose that we have two points of the coordinate plane, and the ordered pairs have coordinates [tex](x_1,y_1)[/tex] and [tex](x_2,y_2)[/tex].
The shortest distance between them is given by the equation presented as follows, derived from the Pythagorean Theorem:
[tex]D = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]
The coordinates are given as follows:
Animal shelter: (-3,3).Stadium: (6,2).Since the spaces are filled by houses, we cannot apply the formula, hence the shortest distance is:
6 - (-3) + 3 - 2 = 9 + 1 = 10 blocks.
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IF YOU ANSWER CORRECTLY I WILL GIVE YOU BRAINLIEST***
Find the area of the shaded sector. Round to the nearest tenth.
167°
17. 8 yd
Area = [ ? ]yd? Enter
The area of the shaded sector is approximately 463.8 square yards.
To find the area of the shaded sector, we need to use the formula for the area of a sector, which is given by
Area of sector = (central angle / 360°) x πr²
where r is the radius of the sector, and the central angle is the angle between the two radii that form the sector.
In this case, we are given that the central angle of the shaded sector is 167°, and the radius is 17.8 yards. So, we can substitute these values into the formula as follows
Area of sector = (167° / 360°) x π(17.8)²
Simplifying this expression, we get:
Area of sector = 0.464 x 998.92
Multiplying these two numbers, we get
Area of sector = 463.8 square yards
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The given question is incomplete, the complete question is:
Find the area of the shaded sector. Round to the nearest tenth.
The diameter of a semicircle is 4 feet. What is the semicircle's perimeter?
PLEASE HELP!!!
The picture explains the problem
The inequality represented by the given number line is: -60 ≥ m.
Explain about the inequality on number line:We can see the values that an inequality represents by placing it on a number line.
On a number line, inequalities are represented by drawing a straight line and designating the end points as an open or closed circle.
An empty circle indicates that the value is not included.A closed circle indicates that the value is included.On a number line, inequality is represented as follows:
Choose the value or values that must be displayed on the number line.Determine if an > or < open circle or a ≥ or ≤closed circle is required; the situation either requires an open circle or a closed circle.Draw a straight line either to the number's left or right side or in between the circles to indicate the solution set.For the given number line,
-6 is shown with the closed circle, with lines extending towards +∞
Thus, the inequality represented by the given number line is: -60 ≥ m.
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The answers are in the picture. I need help ASAP!
The perimeter and the area of the regular polygon are 20 inches and 27.53 square inches.
How to calculate the area and the perimeter of a regular polygon
The figure representing a regular polygon with five sides of same length, whose perimeter and area is well described by following formulas:
Perimeter
p = n · l
Area
A = (n · l · a) / 2
Where:
A - Area of the polygon, in square inches. n - Number of sides.l - Side length, in inches. a - Apothema, in inches. p - Perimeter, in inches.Where the apothema is:
a = 0.5 · l / tan (180° / n)
If we know that l = 4 in and n = 5, then the perimeter and the area of the polygon are:
Perimeter
p = 5 · (4 in)
p = 20 in
Area
a = 0.5 · (4 in) / tan (180° / 5)
a = 0.5 · (4 in) / tan 36°
a = 2.753 in
A = [5 · (4 in) · (2.753 in)] / 2
A = 27.53 in²
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Recall the equation for a circle with center (h, k) and radius r. At what point in the first quadrant does
the line with equation y = 2z+ 3 intersect the circle with radius 3 and center (0, 3)?
The point of intersection in the first quadrant is (3, 4) from the equation of circle.
Equation of circle.
We can start by substituting the equation of the line into the equation of the circle and solving for z and y.
The equation for the circle is:
(x - h)^2 + (y - k)^2 = r^2
Substituting h = 0, k = 3, and r = 3, we get:
x^2 + (y - 3)^2 = 9
Now, we substitute y = 2z + 3 into the equation:
x^2 + (2z + 3 - 3)^2 = 9
Simplifying, we get:
x^2 + 4z^2 = 9
Since we are looking for a point in the first quadrant, both x and z must be positive. We can solve for z in terms of x:
4z^2 = 9 - x^2
z^2 = (9 - x^2)/4
z = sqrt[(9 - x^2)/4]
Substituting this into the equation y = 2z + 3, we get:
y = 2sqrt[(9 - x^2)/4] + 3
To find the point of intersection in the first quadrant, we need to find a value of x that satisfies both this equation and the equation of the circle. We can substitute the equation for y into the equation for the circle:
x^2 + [2sqrt((9 - x^2)/4)]^2 = 9
Simplifying, we get:
x^2 + (9 - x^2)/2 = 9
Multiplying both sides by 2:
2x^2 + 9 - x^2 = 18
Solving for x:
x^2 = 9
x = 3
Substituting x = 3 into the equation for y, we get:
y = 2sqrt[(9 - 3^2)/4] + 3 = 4
Therefore, the point of intersection in the first quadrant is (3, 4).
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A bag of poker chips contains 4 purple, 6 red, 3 pink, and 2 black chips. What is the probability of pulling from the bag A black chip?
The answer of the given question based on the probability is , the probability of pulling a black chip from the bag is 2/15 or approximately 0.133 or 13.3%.
What is Probability?Probability is measure of likelihood of an event occurring. It is a number between 0 and 1, where 0 indicates an impossible event and 1 indicates a certain event. For example, the probability of flipping a coin and getting heads is 0.5, or 50%, assuming a fair coin. Probability can be calculated by dividing the number of favorable outcomes by the total number of possible outcomes
The total number of poker chips in the bag is:
total = 4 + 6 + 3 + 2 = 15
The probability of pulling a black chip from the bag is the number of black chips divided by the total number of chips:
P(black) = number of black chips / total number of chips
P(black) = 2 / 15
Therefore, the probability of pulling a black chip from the bag is 2/15 or approximately 0.133 or 13.3%.
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a trapezoid has an area of 96 ft. if the base is 11 feet and the height is 8 feet, what is the length of the other base
Answer:
The formula for the area of a trapezoid is:
Area = (b1 + b2) / 2 x h
where b1 and b2 are the lengths of the two parallel bases, and h is the height.
We are given that the area of the trapezoid is 96 ft, the height is 8 ft, and one of the bases (b1) is 11 ft. We can use this information to find the length of the other base (b2).
Substituting the given values into the formula for the area of a trapezoid, we get:
96 = (11 + b2) / 2 x 8
Multiplying both sides by 2 and dividing by 8, we get:
24 = 11 + b2
Subtracting 11 from both sides, we get:
b2 = 13
Therefore, the length of the other base is 13 ft.
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I will give brainliest if you help me answer this!!!
Answer: it would be (b) because the number 64 7th graders hights are less than
65 inches tall
Step-by-step explanation:
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which pair of dotplots provides the strongest statistical evidence that the training group ran faster (small times), on average, than the no training group?
Similarly, if the spread of the training group's distribution is smaller than the spread of the no training group's distribution.
The training group ran faster on average, than the no training group.
To determine which pair of dot plots provides the strongest statistical evidence that the training group ran faster.
Compare the center and spread of the two groups.
The center of the training group's distribution is consistently to the left (i.e., lower times) of the center of the no training group's distribution.
Overlap between the two distributions, then we can conclude that the training group ran faster on average, than the no training group.
100 by adding data.
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We need to examine the dotplots and summary statistics of the two groups to determine which pair of dotplots provides the strongest statistical evidence that the training group ran faster, on average, than the no training group.
To determine which pair of dotplots provides the strongest statistical evidence that the training group ran faster, we need to compare the centers and spreads of the two groups. If the center of the training group is shifted to the left (smaller times) compared to the center of the no training group, and if the spread of the training group is smaller than the spread of the no training group, then we have stronger evidence that the training group ran faster, on average, than the no training group.
Without seeing the actual dotplots, we cannot make a definitive determination. However, we can describe what to look for in the dotplots. Specifically, we want to see a clear separation between the centers of the two groups, and we want to see less overlap between the dots in the training group than in the no training group.
In addition, we can calculate summary statistics for the two groups, such as the mean and standard deviation, to help us compare the centers and spreads of the two groups. If the mean of the training group is significantly smaller than the mean of the no training group, and if the standard deviation of the training group is significantly smaller than the standard deviation of the no training group, then we have stronger evidence that the training group ran faster, on average, than the no training group.
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help me please please
If the area is halfway between two entries, use the z-score halfway between the corresponding z-score s. If convenient, use technology to find the z-score. 37. 0. 4364. 38. 0. 1 39. 993. 40. P2. 41. P67. 42. P46. The z-score that has 20. 9% of the distribution’s area to its right
The z- score that has 20.9 of the distribution's area to its right is roughly 0.84.
To find the z- score that has 20.9 of the distribution's area to its right, we can use a standard normal distribution table or a calculator with a normal distribution function.
Using a standard normal distribution table, we can look for the area to the left of the z- score with an area of 1-0.209 = 0.791. The closest value we can find in the table is 0.7901, which corresponds to a z- score of 0.84.
Alternatively, we can use a calculator with a normal distribution function.However, 0, 1) = 0, If we use the formula" normalcdf(z. 209" to find the z- score, we get z = 0.84.
therefore, the z- score that has 20.9 of the distribution's area to its right is roughly 0.84.
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Fifteen children split $9 among themselves so that each child receives the same amount. How much did each child receive?
The total amount of money received by each child after splitting $9 among 15 children is equal to $0.60.
Total number of children is equal to 15
Total amount of money distributed among 15 children = $9
To find out how much each child receives,
We can divide the total amount of money by the number of children.
In this case, there are 15 children and $9 to split.
So, the amount of money each child receives is equal to,
(Total amount of money )/ ( total number of children )
= $9 ÷ 15
= $0.60
Therefore, amount of money received by each child in the group of 15 children is equal to $0.60.
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A small can of tomato paste has a radius of 2 inches and a height of 4 inches. Suppose the larger, commercial-size can has dimensions that are related by a scale factor of 3. Which of these is true?
The correct statement about scale factor is the radius of the larger can will be 8 inches. (option c).
Let's first consider the dimensions of the small can of tomato paste. We are given that it has a radius of 2 inches and a height of 4 inches. Therefore, its volume can be calculated using the formula for the volume of a cylinder, which is V = πr²h, where V is the volume, r is the radius, and h is the height. Substituting the given values, we get:
V_small = π(2²)(4) = 16π cubic inches
Using these dimensions, we can calculate the volume of the larger can using the same formula:
V_large = π(6²)(12) = 432π cubic inches
Now, let's compare the volumes of the small and large cans. We have:
V_large = 432π cubic inches > 16π cubic inches = V_small
Therefore, we can conclude that the volume of the larger can is greater than the volume of the smaller can. But is it three times greater? Let's compare:
V_large = 432π cubic inches 3
V_small = 3(16π) cubic inches = 48π cubic inches
We see that 432π cubic inches is not equal to 48π cubic inches, so option b) is not correct.
Finally, let's consider the radius of the larger can. We found earlier that it is 6 inches, which is greater than the radius of the smaller can, but it is not 8 inches. Therefore, option c) is correct.
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Complete Question:
A small can of tomato paste has a radius of 2 inches and a height of 4 inches. Suppose the larger, commercial-size can has dimensions that are related by a scale factor of 3. Which of these true?
a) The radius of the larger can will be 5 inches.
b) The volume of the larger can will be 3 times the volume of the smaller can
c) The radius of the larger can will be 8 inches.
d) The volume of the larger can is 3 times the volume of smaller can
how do i solve this trigonometry question?
Answer:
2.07 cm
Step-by-step explanation:
Hypotenuse = 2 cm
Adjacent side = a
Formula
cos θ = Hypotenuse/Adjacent side
cos 15 = 2/a
Note
The value of cos 15 is approximately 0.965.
0.965 = 2/a
a = 2/0.965
a = 2.07 cm ( approximately )
A tram moved downward 12 meters in 4 seconds at a constant rate. What was the change in the tram's elevation each second?
Therefore , the solution of the given problem of unitary method comes out to be during the 4-second period, the tram's elevation changed by 3 metres every second.
What is an unitary method?To complete the assignment, use the iii . -and-true basic technique, the real variables, and any pertinent details gathered from basic and specialised questions. In response, customers might be given another opportunity to sample expression the products. If these changes don't take place, we will miss out on important gains in our knowledge of programmes.
Here,
By dividing the overall elevation change (12 metres) by the total time required (4 seconds),
it is possible to determine the change in the tram's elevation every second. We would then have the average rate of elevation change per second.
=> Elevation change equals 12 metres
=> Total duration: 4 seconds
=> 12 meters / 4 seconds
=> 3 meters/second
As a result, during the 4-second period, the tram's elevation changed by 3 metres every second.
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your school wants to maximize their profit, P, from the sales of tickets, T, to the homecoming football game. They determine the function, P(t)=60t^2+420t-440 models the profit they can earn in hundreds of dollars in terms of price per ticket, in dollars.
The maximum profit occurs at the endpoint t = 100, where the profit is $5551.20.
Maximum profit calculationTo maximize the profit function P(t) = 60t^2 + 420t - 440, we need to find the value of t that will give us the maximum profit.
One way to do this is to use calculus. We can take the derivative of P(t) with respect to t and set it equal to zero to find the critical points:
P'(t) = 120t + 420
Set P'(t) = 0 and solve for t:
120t + 420 = 0
t = -3.5
This gives us one critical point at t = -3.5. However, this value of t doesn't make sense in the context of the problem - we can't sell tickets at a negative price!
So we need to check the endpoints of the domain of the function, which is given by the constraint that t is greater than or equal to zero (we can't charge a negative price for tickets either).
When t = 0, P(0) = -440.
When t is very large, say t = 100, P(100) = 600000 - 44000 - 440 = 555120.
Therefore, the maximum profit occurs at the endpoint t = 100, where the profit is $5551.20.
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the graph of polygon fghi is shown. graph the image of fghi after a refelction across the line y=-1. include the line of reflection. then write the coordinates of the image
The coordinates of the reflected polygon F'G'H'I' are as follows:
F'(-2, -1), G'(5, -4), H'(8, -5), and I'(6, -2).
What is the reflection?
In mathematics, reflection is defined as the mirror image of a figure crossing a line (drawn or imagined), known as the line of reflection.
The vertices of the polygon FGHI are as follows:
F(2, -1)
G(5, 2)
H(8, 3)
I(6, 0)
To reflect the polygon FGHI across the line y = -1, we need to flip the points over the line.
Now we can reflect each of the points of the polygon across the line y = -1 to get the image:
F(2, -1) stays in the same place because it lies on the line of reflection.
G(5, 2) is reflected to G'(5, -4) by flipping it vertically across the line y = -1.
H(8, 3) is reflected to H'(8, -5), and
I(6, 0) is reflected to I'(6, -2).
Hence, The coordinates of the reflected polygon F'G'H'I' are as:
F'(-2, -1), G'(5, -4), H'(8, -5), and I'(6, -2).
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Complete question:
The complete question is attached in the image.