The net effect on someone's overall spending after returning an item for 15 dollars and buying another item for 15 dollars will depend on the store's return policy regarding returns and exchanges
If someone returns an item for 15 dollars and then buys another item for 15 dollars, the net effect on their overall spending will depend on the store's policy regarding returns and exchanges.
If the store offers a full refund for the returned item, the person will essentially receive back the 15 dollars they spent on the original item. If they then purchase a new item for 15 dollars, their overall spending will remain the same.
However, if the store charges a restocking fee or only offers store credit for returns, the person may not receive the full 15 dollars back. In that case, their overall spending would increase by the amount of the restocking fee or by the difference between the refunded amount and the original purchase price.
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The given question is incomplete, the complete question is:
If someone returns an item for 15 dollars and buys another item for 15 dollars, what will be the net effect ?
explain how x[tex]x^{2} +6^{x} +5[/tex] equals [tex](x+5)(x+1)[/tex]
Answer:
To show how x² + 6x + 5 is equivalent to (x + 5)(x + 1), we can use the FOIL method, which stands for First, Outer, Inner, and Last.
First, we multiply the first term of each factor: x and x, which gives x².
Next, we multiply the outer terms of each factor: x and 1, which gives x.
Then, we multiply the inner terms of each factor: 5 and x, which gives 5x.
Finally, we multiply the last term of each factor: 5 and 1, which gives 5.
Adding up these terms, we get:
x² + x + 5x + 5
Simplifying by combining like terms, we get:
x² + 6x + 5
This is the same as the original expression. Therefore, we have shown that:
x² + 6x + 5 = (x + 5)(x + 1)
Step-by-step explanation:
the distance from home plate to dead center field in a certain baseball stadium is 407 feet. a baseball diamond is a square with a distance from home plate to first base of 90 feet. how far is it from first base to dead center field?
The distance from first base to dead center field in a certain baseball stadium is 338 feet.
Explanation:
The distance from first base to dead center field in a certain baseball stadium is 338 feet. Given,The distance from home plate to dead center field in a certain baseball stadium is 407 feet.A baseball diamond is a square with a distance from home plate to first base of 90 feet.
To find,How far is it from first base to dead center field?
Solution:Given that the distance from home plate to dead center field is 407 feet.The baseball diamond is a square with a distance from home plate to first base of 90 feet.Now we have to find the distance from first base to dead center field.We can find the distance by using the Pythagorean theorem which states that the square of the length of the hypotenuse of a right triangle is equal to the sum of the squares of the other two sides.Let us consider a right triangle ABC where AB represents the distance from home plate to first base, AC represents the distance from home plate to dead center field, and BC represents the distance from first base to dead center field.
As per the Pythagorean theorem, we have
AC² = AB² + BC²
Putting the values, we have
AC² = (90)² + BC²AC² = 8100 + BC²AC² - BC² = 8100
Taking the square root on both sides, we getAC = √(8100 + BC²)
Now we have AC = 407 ft,AB = 90 ftAC² = AB² + BC²407² = 90² + BC²BC² = 407² - 90²BC² = 165649BC = √165649BC = 407 ft - 90 ft
BC = 338 ft
Therefore, the distance from first base to dead center field in a certain baseball stadium is 338 feet.
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Which expression is equivalent to -6(p - 6)?
Answer: -6(p - 6) can be simplified using the distributive property of multiplication:
-6(p - 6) = -6 * p - (-6 * 6)
= -6p - (-36)
= -6p + 36
Therefore, -6(p - 6) is equivalent to -6p + 36.
Step-by-step explanation:
Farrah borrowed $155 from her brother. She has already paid back $15. She plans to pay back $35 each month until the debt is paid off. Which describes the number of months it will take to pay off the debt? Select three options. x + 15 + 35 = 155 35 x + 15 = 155 35 x = 155 minus 15 It will take 8 months to pay off the debt. It will take 4 months to pay off the debt.
Answer:
Farrah borrowed $155 from her brother and has paid back $15 so far. She plans to pay back $35 each month until the debt is paid off.
To determine the number of months it will take to pay off the debt, we need to solve the equation:
x * 35 + 15 = 155
where x is the number of months it will take to pay off the debt.
Simplifying the equation, we get:
x * 35 = 155 - 15
x * 35 = 140
x = 4
Therefore, it will take 4 months to pay off the debt.
Options that describe the number of months it will take to pay off the debt are:
- 35x + 15 = 155- x + 15 + 35 = 155- It will take 4 months to pay off the debt.Step-by-step explanation:
Which of the following is not part of the solution set of the inequality x +2 ≥ 3 ?
0
2
3
6
the number that is not part of the solution set is A) 0.
How to find and what does variable mean?
To solve the inequality x + 2 ≥ 3, we need to isolate the variable x.
x + 2 ≥ 3
Subtract 2 from both sides:
x ≥ 1
This means that any value of x that is greater than or equal to 1 is part of the solution set.
To check which of the given numbers is not part of the solution set, we need to substitute each of them in the inequality and see if it is true or false.
A) 0 + 2 ≥ 3 --> 2 ≥ 3 (False)
B) 2 + 2 ≥ 3 --> 4 ≥ 3 (True)
C) 3 + 2 ≥ 3 --> 5 ≥ 3 (True)
D) 6 + 2 ≥ 3 --> 8 ≥ 3 (True)
Therefore, the number that is not part of the solution set is A) 0.
In mathematics, a variable is a symbol or letter that represents a value or a quantity that can vary or change. It is often used to represent unknown or undefined values or quantities, and is commonly denoted by letters such as x, y, z, a, b, and c.
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Oliver was driving down a road and after 4 hours he had traveled 66 miles. At this speed, how many miles could Oliver travel in 14 hours? im almost done
Answer:
We can start by using the formula:
distance = speed x time
We know that Oliver traveled 66 miles in 4 hours, so we can use this information to find his speed:
speed = distance / time
speed = 66 miles / 4 hours
speed = 16.5 miles per hour
Now that we know Oliver's speed, we can use the same formula to find how many miles he could travel in 14 hours:
distance = speed x time
distance = 16.5 miles per hour x 14 hours
distance = 231 miles
Therefore, Oliver could travel 231 miles in 14 hours at this speed.
Consider the following sample data:
x 12 18 20 22 25
y 15 20 25 22 27
a. Calculate the covariance between the variables. (Round your intermediate calculations to 4 decimal places and final answer to 2 decimal places.)
Covariance b-1. Calculate the correlation coefficient. (Round your intermediate calculations to 4 decimal places and final answer to 2 decimal places.)
a. Covariance = 10.11
b. Correlation coefficient = 0.376
Considering the following sample data:
x 12 18 20 22 25
y 15 20 25 22 27
a. Calculation of covariance
Covariance can be calculated by the formula:
Cov (X, Y) = [Σ(X - μx) (Y - μy)] / n
where, Σ denotes the sum of, X and Y are the variables, μx and μy are the means of X and Y respectively, and n is the sample size.
x y x-μx y-μy (x-μx)(y-μy) (-)^2 (-)^2
12 15 -6.6 -5.6 37.12 43.56 31.36
18 20 -0.6 -0.6 0.36 0.36 0.36
20 25 1.4 4.4 6.16 1.96 19.36
22 22 3.4 -2.6 -8.84 11.56 6.76
25 27 6.4 2.4 15.36 41.16 5.76
Σx = 97, Σy = 109, Σ(x-μx) = 5.00, Σ(y-μy) = -2.00, Σ(x-μx)(y-μy) = 50.56
Covariance is: Cov (X, Y) = [Σ(X - μx) (Y - μy)] / n= 50.56/5= 10.11
Thus, the covariance between the variables is 10.11.
b-1. Calculation of correlation coefficient.
Correlation coefficient is a statistical measure that measures the degree to which two random variables are associated. It can be calculated by the formula:
= Cov (X, Y) / where, Cov (X, Y) is the covariance between X and Y, σX and σY are the standard deviations of X and Y respectively.
σx2 = [Σ(x-μx)2] / (n-1)σy2 = [Σ(y-μy)2] / (n-1)σx = √[Σ(x-μx)2] / (n-1)σy = √[Σ(y-μy)2] / (n-1)
x y (x-μx) (y-μy) (x-μx)2 (y-μy)2 (-)(-)
12 15 -6.6 -5.6 43.56 31.36 1
18 -0.6 -0.6 0.36 0.36 0.32 5
20 25 1.4 4.4 1.96 19.36 22
22 3.4 -2.6 11.56 6.76 -8.84 25
27 6.4 2.4 41.16 5.76 15.36
Σx = 97, Σy = 109, Σ(x-μx) = 5.00, Σ(y-μy) = -2.00, Σ(x-μx)(y-μy) = 50.56
σx2 = 30.70
σy2 = 25.70
σx = √30.70 = 5.54
σy = √25.70 = 5.07
Correlation coefficient is:
= Cov (X, Y) / = 10.11 / (5.54*5.07)= 0.376
Thus, the correlation coefficient is 0.376.
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The average daily high temperature in June in LA is 78°F with a standard deviation of 5°F. Suppose that the temperatures in June closely follow a normal distribution.
a) What is the probability of observing an 84°F temperature or higher in LA during a randomly chosen day in June? Round your answer to 4 decimal places.
b) How cool are the coldest 10% of the days (days with lowest average high temperature) during June in LA? Round your answer to 1 decimal place.
The probability of observing an 84°F temperature or higher in LA during a randomly chosen day in June is 0.1151 and the temperature of the coldest 10% of the days (days with lowest average high temperature) during June in LA is approximately 71.6°F.
Let X be the random variable that represents the average daily high temperature in LA in June. Then X ~ N(μ = 78, σ = 5). The probability of observing an 84°F temperature or higher in LA during a randomly chosen day in June is given by: P(X > 84) = P(Z > (84 - 78) / 5) = P(Z > 1.2) = 0.1151 (rounded to 4 decimal places)
To find the temperature of the coldest 10% of the days (days with lowest average high temperature) during June in LA, we need to find the 10th percentile of the distribution. Using a z-score table, we can find the z-score corresponding to the 10th percentile: z = -1.28. Thus, the temperature of the coldest 10% of the days during June in LA is given by: x = μ + zσ= 78 + (-1.28)(5)≈ 71.6°F (rounded to 1 decimal place)
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Can someone help me with geometry? Its due tonight(answers and explanation please)!
Answer:
vro I guess this is locating root 5
Step-by-step explanation:
mark me BRAINLIST
What lab test determines effectiveness of epoetin alfa?
From the given data, the effectiveness of epoetin alfa, which is a medication used to treat anemia, can be determined through a blood test called a complete blood count (CBC).
The CBC measures the number of red blood cells, white blood cells, and platelets in the blood, as well as the levels of hemoglobin and hematocrit.
In patients receiving epoetin alfa, the goal is to increase the hemoglobin level and hematocrit to a target range that is appropriate for their condition. Therefore, monitoring these levels through regular CBCs can help determine whether the medication is effective and whether the dosage needs to be adjusted.
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Yasmin started a savings account with $5. At the end of each week, she added 3. This function models the amount of money in the account for a given week.
The function that models the amount of money in Yasmin's savings account for a given week can be written as: f(x) = 3x + 5
where x represents the number of weeks since Yasmin opened the account.
The constant term of 5 represents the initial amount Yasmin deposited into the account when she opened it, and the coefficient of 3 represents the amount she adds at the end of each week.
For example, after 1 week, the amount of money in the account would be:
f(1) = 3(1) + 5 = 8
After 2 weeks:
f(2) = 3(2) + 5 = 11
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Sides of a triangle are in the ratio 12:17:25 and its perimeter is 540 cm. Find its area
Answer:
102
Step-by-step explanation:
(b•h)/2
(12•17)/2
204/2
The function f(x) = -4.9x² + 17x + 0.6 describes the height in meters of a basketball x seconds after it has been thrown vertically into the air. Solve the following problem. If your answer is correct you will see an image appear on your screen. WHEN will the basketball reach its maximum height? Round your answer to 3 decimal places if necessary. Use your graph from screen 5 to help. Do not include units.
The basketball will reach its maximum height 1.735 seconds after it has been thrown vertically into the air.
Define the term function?A function is a relationship between a set of inputs and a set of possible outputs with the property that each input is related to exactly one output. A function can be represented as an equation, a graph, a table of values, or a verbal description. For example, the function f(x) = 2x + 1 represents a relationship between the input x and the output 2x + 1.
To find the maximum height of the basketball, we need to find the vertex of the parabola represented by the function f(x). The vertex of x-coordinate is:
x = -b/2a
The coefficients of the quadratic equation a[tex]x^2[/tex] + b[tex]x[/tex] + c are a, b, and c. In this case, a = -4.9 and b = 17, so:
x = -17/(2*(-4.9)) = 1.735 (rounded to 3 decimal places)
Therefore, the basketball will reach its maximum height 1.735 seconds after it has been thrown vertically into the air.
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Question: Georgetown business college offers 1-year certificates (C) and 2-year diplomas for studies in business and information technology. Sixty percent of the students are registered in the 2-year diploma program. Males (M) make up 55% of the students in the 2-year diploma program while 35% of the students in the 1-year certificate program are females(F). 1 what is the probability that a randomly selected student is male? 2 Suppose that you randomly select a female student. What is the probability that she is registered in 2-year diploma program? 3 What is the probability that a randomly selected male student is registered in a 1-year certificate program? 4 What is the probability that a randomly selected student is female or is registered in a 2-year diploma program? 5 Are ‘1-year program"" and ""male"" independence events? Your answer must include probability calculations
1. 55%
2. 60%
3. 35%
4. 95%
5. 40%
1. The probability that a randomly selected student is male is 0.55 (55%).
2. The probability that a randomly selected female student is registered in the 2-year diploma program is 0.6 (60%).
3. The probability that a randomly selected male student is registered in the 1-year certificate program is 0.35 (35%).
4. The probability that a randomly selected student is female or is registered in a 2-year diploma program is 0.95 (95%).
5. The events “1-year program” and “male” are not independent as the probability of one event affects the probability of the other event. For example, the probability of a randomly selected male student being registered in the 1-year certificate program is 0.35 (35%), which is lower than the overall probability of a randomly selected student being registered in the 1-year certificate program (0.4 or 40%).
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A hollow ball is made of rubber that is 2 centimeters thick. the ball has a radius to the outside surface of 6 centimeters. what is the approximate volume of rubber used to make the ball? use 3.14 for pi.
The approximate volume of rubber used to make the ball is 636.24 cubic centimeters.
To find the volume of the concave space inside the ball, we need to abate the volume of the ball with a lower compass. The compass of the inside face of the ball can be set up by abating the consistence of the rubber from the compass of the outside face = r_outside-
consistence = 6- 2 = 4 centimeters
The volume of the concave space inside the ball can be set up using the same formula as below but with the lower compass = (4/3)πr_i
nside3 = (4/3) π( 4) 3
= (4/3) π( 64)
≈268.08 boxy centimeters
Eventually, the volume of rubber used to make the ball is the difference between the volume of the entire ball and the volume of the concave space inside = V-V_hollow ≈
=904.32-268.08
=636.24 cubic centimeters
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Factor 196x^2-y^2 in y=mx+b
The factored form of 196x²- y² is (14x + y)(14x - y).
What is factored form?A factored form is a parenthesized algebraic expression. In effect a factored form is a product of sums of products, or a sum of products of sums. Any logic function can be represented by a factored form, and any factored form is a representation of some logic function.
What is slope-intercept form?The slope intercept form of a straight line is one of the most common forms used to represent the equation of a line. The slope intercept formula can be used to find the equation of a line when given the slope of the straight line and the y-intercept. The formula is y=mx+b.
The expression 196x² - y² can be factored using the difference of squares formula, which states that:
a²- b² = (a + b)(a - b)
In this case, we have a = 14x and b = y, so we can write:
196x² - y² = (14x + y)(14x - y)
Therefore, the factored form of 196x²- y² is (14x + y)(14x - y).
The expression (14x + y)(14x - y) is the factored form of a quadratic expression and does not represent a linear equation that can be written in slope-intercept form.
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One of the solutions to 14 - 6 cos x = 21 - 19 cos x for -pi ≤ x ≤ pi is
A. 1.29
B. 0.57
C. 1.00
D. 1.28
Answer:
1
Step-by-step explanation:
i think
AABC is rotated 270° counterclockwise about the origin. Which triangle below represents a 270° counterclockwise rotation about the origin?
A) Red image 1
B) Green image 3
C) none of these
D) Purple image 2
The correct option is C. Green image of triangle ABC.
How to find the rotated shape or coordinates of image about origin?
As we know that triangle ABC, is rotated 270° counterclockwise about the origin. So, the algebraic rule for a figure is,
90° Clockwise or 270° counter clockwise, (x,y) = (y,-x)
As, C(-3,3) which is equal to (3,3) from the algebraic rule.
And (3,3) belongs to 1st quadrant i.e. green image is the correct answer.
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Triangle below represents is option C. Green image of triangle ABC.
What is Triangle?A triangle is a geometric shape with three sides and three angles. It is one of the most fundamental shapes in geometry and is used extensively in mathematics, physics, engineering, and many other fields. Triangles are often classified based on their angles and sides.
As we know that triangle ABC, is rotated 270° counterclockwise about the origin. So, the algebraic rule for a figure is,
90° Clockwise or 270° counter clockwise, (x,y) = (y,-x)
As, C(-3,3) which is equal to (3,3) from the algebraic rule.
And (3,3) belongs to 1st quadrant i.e. green image is the correct answer.
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You bought 100 shares of stock at $15 per share. You sold your 100 shares at $21. 75 per share. Calculate your percentage of gain.
The percentage gain is 45%
To calculate the percentage gain on your investment, you need to find the difference between the selling price and the buying price, divide that difference by the buying price, and then multiply by 100 to get the percentage.
The difference between the selling price and the buying price is:
$21.75 - $15 = $ 6.75
So the gain on the investment is $ 6.75 per share.
To find the percentage gain, you divide the gain by the buying price:
$6.75 ÷ $15 = 0.45
Then, multiply by 100 to convert this into a percentage :
0.45 x 100% = 45%
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Reflecting the graph of y = cos x across the y-axis is the same as reflecting it across the x-axis.
true or false
False: It is the same to reflect the graph of y = cos x across the y-axis as it is across the x-axis.
Which transformational pair has the same properties as a reflection down the y-axis?A 180° rotation about the origin is a transformation that would have the same outcome as a reflection over the x-axis followed by a reflection over the y-axis. The x-coordinate of each point must be negated while reflecting across the Y axis, but the -value must remain unchanged.
What does reflection occur between the X and Y axes?By graphing y=-f(x), we may reflect the graph of any function f about the x-axis, and by graphing y=f, we can reflect the graph about the y-axis (-x). By graphing y=-f, we can even reflect it about both axes (-x).
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Hello! Thanks for visiting the question. ( Hope you know the answer! )
Pre-calculus ( you might not know )
60pts + Brainliest ( if correct and I agree )
Question is in the picture!
[tex]Expectations[/tex]
Correct
Reasonable Explanation
Explanation
[tex]Must Not[/tex]
Incorrect
Spam
Nonsense
Gibberish
No explanation
Thank you have a great day!
The final answer is: ∫(2x-1)÷[(x-3)(x+2)]dx = ln|x-3| + ln|x+2| + C
What is Integration ?
In calculus, integration is the inverse operation of differentiation. It is a mathematical technique used to find the integral of a function. The integral of a function f(x) is another function F(x), which gives the area under the curve of f(x) from a certain point to another.
To perform the integration of the given function:
∫(2x-1)÷([tex]x^{2}[/tex]-x-6)dx
First, we need to factor the denominator:
[tex]x^{2}[/tex]- x - 6 = (x-3)(x+2)
So we can rewrite the integral as:
∫(2x-1)÷[(x-3)(x+2)]dx
Next, we need to decompose the fraction into partial fractions:
(2x-1)÷[(x-3)(x+2)] = A÷(x-3) + B÷(x+2)
Multiplying both sides by (x-3)(x+2), we get:
2x-1 = A(x+2) + B(x-3)
Substituting x=3, we get:
5A = 5
A = 1
Substituting x=-2, we get:
-5B = -5
B = 1
So we have:
(2x-1)÷[(x-3)(x+2)] = 1÷(x-3) + 1÷(x+2)
Substituting this back into the integral, we get:
∫(2x-1)÷[(x-3)(x+2)]dx = ∫[1÷(x-3) + 1÷(x+2)]dx
Using the first rule of integration, we get:
∫[1÷(x-3) + 1÷(x+2)]dx = ln|x-3| + ln|x+2| + C
where C is the constant of integration.
Therefore, the final answer is: ∫(2x-1)/[(x-3)(x+2)]dx = ln|x-3| + ln|x+2| + C
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[tex] \displaystyle \int \rm \: \dfrac{2x - 1}{ {x}^{2} - x - 6 } dx[/tex]
Answer:
[tex] \underline{\boxed{\rm = ln |x + 2| + ln |x - 3| + C}}[/tex]
Step-by-step explanation:
[tex] = \displaystyle \int \rm \: \dfrac{2x - 1}{ {x}^{2} - x - 6 } dx[/tex]
[tex] = \displaystyle \int \rm \: \dfrac{2x - 1}{ {x}^{2} - 3x + 2x - 6 } dx[/tex]
[tex] = \displaystyle \int \rm \: \dfrac{2x - 1}{ x(x - 3) + 2(x - 3) } dx[/tex]
[tex] = \displaystyle \int \rm \: \dfrac{2x - 1}{ (x + 2) (x - 3)} dx[/tex]
[tex] \rm \: Let : \displaystyle \rm \: \dfrac{2x - 1}{ (x + 2) (x - 3) } = \dfrac{A }{x + 2} + \dfrac{B}{x - 3} [/tex]
[tex]\rm\implies\displaystyle \rm \: \dfrac{2x - 1}{ (x + 2) (x - 3) } = \dfrac{A(x - 3) + B(x + 2) }{(x + 2)(x - 3)} \\ [/tex]
[tex] \rm \implies\displaystyle \rm \: {2x - 1}{ } = {A(x - 3) + B(x + 2) } \\ [/tex]
Put x = 3 , we get
[tex] \rm \implies\displaystyle \rm \: {6 - 1}{ } = {A(3- 3) + B(3 + 2) } \\ [/tex]
[tex] \rm \implies\displaystyle \rm \: {5}{ } = 5 B \\ [/tex]
[tex] \implies \rm \: B = 1[/tex]
Again
put put x = -2
[tex] \rm \implies\displaystyle \rm \: { - 4- 1}{ } = {A( - 2- 3) + B( - 2 + 2) } \\ [/tex]
[tex] \rm \implies\displaystyle \rm \: { - 5}{ } = {A( - 5) } \\ [/tex]
[tex] \rm \implies\displaystyle \rm A = 1 \\ [/tex]
Thus ,
[tex] \displaystyle \int \rm \: \dfrac{2x - 1}{ (x + 2) (x - 3)} dx = \int\dfrac{1}{x + 2} dx + \int \dfrac{1}{x - 3} dx[/tex]
[tex] \rm = ln |x + 2| + ln |x - 3| + C[/tex]
Important formulae:-[tex] \tt\int \dfrac{dx}{ {x}^{2} + {a}^{2} } = \frac{1}{a} { \tan}^{ - 1} \frac{x}{a} + c \\ [/tex]
[tex] \tt\int \dfrac{dx}{ {x}^{2} - {a}^{2} } = \frac{1}{2a} log \frac{x - a}{x + a} + c \\ [/tex]
[tex] \tt\int \dfrac{dx}{ {a}^{2} - {x}^{2} } = \frac{1}{2a} log \frac{a + x}{a - x} + c \\ [/tex]
[tex] \tt\int \: \dfrac{dx}{ \sqrt{ {x}^{2} + {a}^{2} } } = log|x + \sqrt{ {a}^{2} + {x}^{2} } | + c \\ [/tex]
[tex] \tt\int \: \dfrac{dx}{ \sqrt{ {x}^{2} - {a}^{2} } } = log|x + \sqrt{ {x}^{2} - {a}^{2} } | + c \\ [/tex]
[tex] \tt \int \: \dfrac{dx}{ {a}^{2} - {x}^{2} } = { \sin }^{ - 1} \bigg(\dfrac{x}{a} \bigg) + c \\ [/tex]
[tex] \tt \int \: \sqrt{ {x}^{2} + {a}^{2} } dx \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\= \tt \dfrac{x}{2} \sqrt{ {a}^{2} + {x}^{2} } + \dfrac{ {a}^{2} }{2} log |x + \sqrt{ {x}^{2} + {a}^{2} }| + c[/tex]
i need the answer! thank you
What is the domain?
A. X>0
B. X<0
Answer:
The answer is B
Step-by-step explanation:
it looks right
Algebraic proofs geometry
The values of the variables can be proved by solving the the equations to get;
8. y = 3
9. k = -2
10. w = 14
11. x = -9
What is an equation?An equation is a statement that indicates that two expressions are equivalent by joining them with the '=' sign.
The method used to prove the value of the variable is by solving the equations as follows;
8. (5·y - 1)/2 = 7
Therefore;
2 × 7 = 5·y - 1
14 = 5·y - 1
5·y = 14 + 1 = 15
y = 15/5 = 3
y = 3
9. 10·k - 4 = 2·k - 20
Therefore;
10·k - 2·k = 8·k = 4 - 20 = -16
8·k = -16
k = -16/8 = -2
Therefore;
k = -2
10. -8·(w + 1) = -5·(w + 10)
-8·w - 8 = -5·w - 50
Therefore;
-5·w + 8·w = 50 - 8 = 42
3·w = 42
w = 42/3 = 14
Therefore;
w = 14
11. 14 - 2·(x + 8) = 5·x - (3·x - 34)
Therefore;
14 - 2·x - 16 = 5·x - 3·x + 34
14 - 2·x - 16 = -2·x - 2
5·x - 3·x + 34 = 2·x + 34
Therefore;
-2·x - 2 = 2·x + 34
2·x + 2·x = -2 - 34 = -36
4·x = -36
x = -36/4 = -9
x = -9
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y=x^2+10x+8 quadratic function in vertex form
Answer:
Step-by-step explanation:
[tex]y=x^2+10x+8=(x+5)^{2}-17[/tex]
Answer:
y = (x + 5)^2 - 17
Step-by-step explanation:
To write the quadratic function y = x^2 + 10x + 8 in vertex form, we need to complete the square. We start by adding and subtracting the square of half of the coefficient of x, which is (10/2)^2 = 25:
y = x^2 + 10x + 8
= (x^2 + 10x + 25) - 25 + 8
= (x + 5)^2 - 17
Therefore, the quadratic function in vertex form is:
y = (x + 5)^2 - 17
The vertex of this parabola is at the point (-5, -17), and the axis of symmetry is the vertical line x = -5. The term (-17) represents the minimum value of the function.
The owner of a bike shop would like to analyze the sales data to determine if the
business is growing, declining, or remaining flat. The owner has the following data:
Sales Revenue Last Year =$125,000
Sales Revenue Current Year = $150,000
What is the Sales Growth?
NEED ANSWER AS A PERCENTAGE
Answer: 20%
Step-by-step explanation:
150,000 - 125,000 = 25,000
20 percent of 125,000 = 25k
Create a rational expression that simplifies to 2x/(x+1)
and that has the following restrictions on x:
x ≠ −1, 0, 2, 3. Write your expression here.
Answer:
One possible rational expression that simplifies to 2x/(x+1) and meets the given restrictions is:
(4x^2 - 2x - 3) / [(x + 1)(x - 3)(x - 2)]
To see why this expression simplifies to 2x/(x+1), we can simplify the numerator and denominator separately:
Numerator:
2x(2x-1) = 4x^2 - 2x
Denominator:
(x+1)(x-3)(x-2)
Multiplying the numerator and denominator by -1 gives:
(-2x)(2x-1) / [(3-x)(2-x)(1+x)]
Then, we can rearrange the factors in the denominator to get:
(-2x)(2x-1) / [(x+1)(x-2)(x-3)]
Now we have the desired rational expression that simplifies to 2x/(x+1) and has the given restrictions on x.
Step-by-step explanation:
Point W is the midpoint of Segment TY. Find the coordinates of Point Y
The coordinates of point Y are (10 - x1, 4y1 - 10), where (x1, y1) are the coordinates of point T.
If W is the midpoint of segment TY, then the coordinates of W are the average of the coordinates of T and Y. Using the midpoint formula, we can find the coordinates of Y:
Let the coordinates of T be (x1, y1) and the coordinates of Y be (x2, y2).
x-coordinate of W = (x-coordinate of T + x-coordinate of Y) / 2
y-coordinate of W = (y-coordinate of T + y-coordinate of Y) / 2
Putting in the coordinates of W and T, we get: 5 = (x1 + x2) / 2
y-coordinate of Y = 2y1 - y-coordinate of W
y-coordinate of Y = 2y1 - (y1 + y2) / 2
Simplifying these equations, we get:
x1 + x2 = 10
y2 = 4y1 - 10
From the first equation, we can solve for x2: x2 = 10 - x1
Putting this into the second equation, we get: y2 = 4y1 - 10
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Classify the following numbers as Natural,Whole numbers,Irrational,non real and rational number
1.√111
2.0
3. Π
4. 71
5. √-81
√111: Irrational number
0: Whole number, Rational number
Π (Pi): Irrational number
71: Natural number, Whole number, Rational number
√-81: Non-real number
√111: Irrational number - The square root of 111 is an irrational number because it cannot be expressed as a fraction or a terminating or repeating decimal.
0: Whole number, Rational number - Zero is a whole number because it is a non-negative integer. It is also a rational number because it can be expressed as the ratio 0/1.
Π (Pi): Irrational number - Pi is an irrational number because it is a non-repeating, non-terminating decimal. It cannot be expressed as a fraction.
71: Natural number, Whole number, Rational number - 71 is a natural number because it is a positive integer. It is also a whole number and a rational number because it can be expressed as the ratio 71/1.
√-81: Non-real number - The square root of -81 is a non-real number because it involves the square root of a negative number. It cannot be expressed as a real number.
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Answer this ASAP will give the brainliest answer
Given that y = 9 cm and θ = 25°, work out x rounded to 1 DP.
Answer:
3.8
Step-by-step explanation:
using sinθ = opp/hypo
sin(25) = x/9
0.4226 = x/9
x = 9(0.4226) = 3.8