Express answers in terms of pi.


1. The radius of a cylinder is 10; the height is 2. Find:

a. circumference of the base

b. area of the base

c. L.A.

d. T.A,

e. V

2. Repeat Excercise 1, using a cylinder in which r = 2 and h = 10.

a. b. c. d. e.

The area of the remaining portion of the sheet is -4x² + 12x + 6.

Jay cuts identical squares from the corners of a rectangular sheet of paper as shown in the adjoining figure.

Therefore, the area of the remaining portion can be found as follows:

area of the rectangle = 3(4x + 2)

area of the rectangle = 12x + 6

Therefore,

area of each square cut out = x²

area of the 4 square cut out = 4x²

Therefore,

area of the remaining portion = 12x + 6 - 4x²

area of the remaining portion = -4x² + 12x + 6

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Therefore , the solution of the given problem of angles comes out to be  the three propositions  m∠3 + m∠4 + m∠5 = 180°, m∠5 + m∠6 = 180°, and m∠2 + m∠3 = m∠6.

The point of intersection of the paths joining a skew ends yields the skew's greatest and smallest walls. A crossroads may be where two paths converge. Angle is another outcome of two things interacting. They approach dihedral shapes more than anything. A two-dimensional curve can be created by arranging two line beams in various configurations between their endpoints.

Here,

Regarding the illustrated diagram, the appropriate statements are:

=> m∠3 + m∠4 + m∠5 = 180°

This is accurate since every triangle's internal angles add up to 180°.

=>  m∠5 + m∠6 = 180°

This is true because a triangle's internal angle and outside angle are always equal to 180 degrees.

=>  m∠2 + m∠3 = m∠6

This is accurate because, based on the information provided,

the exterior angle at angle 2 (m2) of the triangle is equal to the corresponding interior angle at angle 6 (m6) of the triangle.

Therefore, the three propositions  m∠3 + m∠4 + m∠5 = 180°, m∠5 + m∠6 = 180°, and m∠2 + m∠3 = m∠6. are always true in relation to the given figure.

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Thus, the value of x and y for the given right angled triangle are found as:   x = 8 and y = 2√3.

The Pythagorean Theorem, a well-known geometric principle that states that the square just on hypotenuse (the side across from the right angle) of a right triangle equals the sum of the squares on its legs, is also known as the

a² + b² = c².

For the larger triangle, applying Pythagorean theorem:

4² + (4√3)² = x²

x² = 16 + 16*3

x² = 16 + 48

x² = 64

x = 8

Then, x - 6 = 8 - 6 = 2

Now applying Pythagorean theorem for smaller triangle:

y² + (x - 6)² = 4²

y² =  4² - 2²

y² =  16 - 4

y² =  12

y² =  √12

y = 2√3

Thus, the value of x and y for the given right angled triangle are found as:   x = 8 and y = 2√3.

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The domain of the graph in this problem is given as follows:

C) -3 ≤ x ≤ 4.

To determine the domain of a graph, you need to identify the set of all possible input values (also known as the independent variable) that produce a valid output (also known as the dependent variable) on the graph.

On a graph, the input values are represented by the values of x of the graph.

On the graph in this problem, we have that it assumes values of x between -3 and 4, with closed intervals, hence the domain is given as follows:

-3 ≤ x ≤ 4.

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There are two solutions for given system of equations: (5, 35) and (-4, 8).

A system of equations is a grouping of two or more equations with numerous variables that are treated as a whole. The solution to a system of equations is the set of variable values that satisfies all of the equations in the system at the same time.

Typical approaches for resolving equation systems include:

Given system of equations is,

[tex]y=x^2+2x[/tex]..................(1)

[tex]y=3x+20[/tex]..................(2)

Solving equations algebraically,

Equating the formulas for 'y' in both equations:

[tex]x^2 + 2x = 3x + 20[/tex]

Rearranging the equation :

[tex]x^2 - x - 20 = 0[/tex]

Here, we got a quadratic equation,Solving for values of x,

[tex](x - 5)(x + 4) = 0[/tex]

[tex]x - 5 = 0 \\x=5\\or\\x + 4 = 0\\x=(-4)[/tex]

For values of 'y', putting values of x in equation (1),

for x = 5,

[tex]y = 5^2 + 2(5)=25 + 10 = 35[/tex]

Thus, (5, 35) is one of the solution.

for x= -4,

[tex]y = (-4)^2 + 2(-4)=16 - 8 = 8[/tex]

Thus, (-4, 8) is other solution.

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Answer:

[tex]y = \frac{5}{2} x[/tex]

[tex] \frac{y}{x} = \frac{5}{2} [/tex]

The constant of proportionality is the ratio of y to x. Here, the ratio of y to x is 5 to 2. We see that y is directly proportional to x.

Answer:

9/16 of a square inch

Step-by-step explanation:

[tex] \frac{3}{4} \times \frac{3}{4} = \frac{9}{16} [/tex]

Answer:

9 /16 inches^2

Step-by-step explanation:

To find the area of the tile, multiply the length by the width

A = 3/4 * 3/4

A = 9 /16 inches^2

The percentage of adults who preferred soccer or basketball is 25%.

The size of each slice in a circle graph, also called a pie chart, indicates the proportion or percentage of each category, and the information is displayed as a circle divided into sections or slices. Circle graphs are frequently used to compare various categories in a dataset or to illustrate how various components contribute to the overall. They are particularly helpful when working with data that can be broken down into distinct categories, such survey results or demographic data.

From the circle graph we see that, percentage of adults who preferred soccer is 11%, and the percentage who preferred baseball is 14%.

Thus,

11% + 14% = 25%

Hence, the percentage of adults who preferred soccer or basketball is 25%.

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The translation vector for the rectangle is described by T(x, y) = (- 3, - 6).

In this problem we must derive the translation vector between a rectangle and its image set on Cartesian plane (let assume that the origin is on the lower left corner of the square). The translation formula is:

B(x, y) = A(x, y) + T(x, y)

Where:

If we know that A(x, y) = (6, 9) and B(x, y) = (3, 3), then the translation vector is:

T(x, y) = B(x, y) - A(x, y)

T(x, y) = (3, 3) - (6, 9)

T(x, y) = (- 3, - 6)

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By answering the presented question, we may conclude that As a result, the average speed on the flat road is 57 miles per hour.

In mathematics, you can multiply, divide, add, or subtract. An expression is constructed as follows: Number, expression, and mathematical operator A mathematical expression is made up of numbers, variables, and functions (such as addition, subtraction, multiplication or division etc.) It is possible to contrast expressions and phrases. An expression or algebraic expression is any mathematical statement that has variables, integers, and an arithmetic operation between them. For example, the phrase 4m + 5 has the terms 4m and 5, as well as the provided expression's variable m, all separated by the arithmetic sign +.

Let's apply the formula:

distance = time speed

The bus went for 2 hours on the level road, hence the distance travelled is:

1 distance = x 2

The bus went for 3 hours on the twisting route, hence the distance travelled is:

3 distance2 = (x - 20)

Because the bus's total distance travelled is 225 miles, we may write:

distance1 plus distance2 equals 225

Substituting distance1 and distance2 expressions yields:

x × 2 + (x - 20) × 3 = 225

When we simplify this equation, we get:

2x + 3x - 60 = 225

5x = 285\sx = 57

As a result, the average speed on the flat road is 57 miles per hour.

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Answer:

8√2 cm

Step-by-step explanation:

The calculated value of the limit of (ln x)^3 / x^2 as x approaches infinity is 0.

To apply L'Hopital's rule, we need to take the derivative of the numerator and denominator separately with respect to x.

We can apply this rule repeatedly until we get a determinate form.

lim x → ∞ [(ln x)^3 / x^2]

Taking the derivative of the numerator:

= 3(ln x)^2 (1/x)

Taking the derivative of the denominator:

= 2x

Applying L'Hopital's rule again by taking the derivative of the numerator and denominator:

= lim x → ∞ [6(ln x) / x]

Taking the derivative of the numerator:

= 6/x

Taking the derivative of the denominator:

= 1

Applying L'Hopital's rule one last time:

= lim x → ∞ 6 / x^2

= 0

Therefore, the limit of (ln x)^3 / x^2 as x approaches infinity is 0.

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Lynn is hesitant to allow Greta to drop off the potato salad at 10am .

Greta could make the potato salad the night before and keep it in the refrigerator to solve the problem she and Lynn were having. She could then transport the potato salad at a safe temperature in a cooler filled with ice packs on the day of the picnic.

She could ask Lynn to store the potato salad in a cooler or refrigerator until the picnic starts when she gets to the park. Along these lines, the potato salad will be protected to eat and won't represent a gamble of food contamination.

The mayonnaise in Greta's potato salad will spoil, leading to the growth of bacteria that could result in foodborne illness, if it is left outside in the sun until the picnic begins at 2 p.m. The potato salad may cause nausea, vomiting, diarrhea, and stomach cramps in those who consume it.

Because food safety guidelines state that perishable foods, like potato salad, should not be kept at room temperature for more than two hours, Lynn is hesitant to let Greta drop off the potato salad at 10 a.m.

If the potato salad is left out in the sun from 10 a.m. to 2 p.m., bacteria can grow on it, and eating it could make you sick.

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47 mL is equivalent to 0.047 L (liters).

Measurement refers to the process of quantifying or determining the amount, size, or degree of something using a standard unit of measurement. It is a way of expressing the quantity or magnitude of a physical property, such as length, mass, volume, time, temperature, etc.

Equivalent means having the same value, function, or meaning as something else. In mathematics, two values are said to be equivalent if they have the same numerical value or satisfy the same equation or inequality. In chemistry, equivalent refers to the amount of a substance that can react with or replace a given amount of another substance in a chemical reaction. In general, equivalent is used to indicate that two things are equal in some way or have the same effect or significance.

1L =1000mL

1mL=1/1000L

Therefore 47 mL=.047 L

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The probability that a committee of 10 members consisting of 6 males and 4 females will be selected is 0.3633.

The total number of ways to develop the complex would be 665, 280 ways.

To find the probability that a committee of 10 members consisting of 6 males and 4 females be selected for this committee, we need to calculate the number of possible ways to choose 6 males from the 28 males and 4 females from the 12 females.

Using combinations, we have:

Number of ways to choose 6 males = C(28, 6) = 28! / (6! x (28 - 6)!)

Number of ways to choose 4 females = C(12, 4) = 12! / (4! x (12 - 4)!)

Now, we find the probability:

Probability = (Number of ways to choose 6 males * Number of ways to choose 4 females) / Total ways to choose 10 members

Probability = (C(28, 6) x C(12, 4)) / C(40, 10)

Probability = 0.3633

To find the number of different ways the complex can be developed given the basic designs, we need to consider the following:

The number of ways to arrange the remaining 5 unique designs on the 5 stands is a permutation of 11 designs taken 5 at a time:

P(11, 5) = 11! / (11 - 5)!

Total ways to develop the complex = 12 x P(11, 5)

= 12 x 55440 = 665,280 ways

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(1) The value of X is equal to 4  (2) The mean age is 3. (3) The probability of randomly selecting  a child under the age of 9  is approximately 0.83.  

The formula for calculating the average of given numbers is equal to the sum of all values ​​divided by the total number of values. There are three main types of averages: mean, median, and mode. All of these techniques work slightly differently and often give slightly different typical values.

(i). Given that there are a total of 42 children on the birthday, finding the value of x:

2x + 3x (4x-1) + x + (x-2) + (x-3) = 42

11x - 6 = 42

11x = 48

x = 4

Therefore, the value of x is equal to 4.

(ii). To find the average age, we need to calculate the sum of all the ages and divide by the total number of children:

Average age = (7 x 2 + 8 x 3 + 9 x (4-1) +10 x 4 +11 x (4-2) 12 x (4-3)) / 42

 = (14 + 24 + 27 + 40 + 22 +12) / 42

 = 139/42

 = 3.31

Rounded to the nearest whole number, the average age is 3.  

(iii). The probability of randomly selecting  a child under 9 is obtained by adding  the number of children aged 7, 8 or 9 (because we want children under 9) and  dividing by the total number of children:

Number of children under 9 years  = 2x + 3x + (4x-1)

Number of children under 9 years  = 9x - 1

Number of children under 9  = 9(4)–1

Number of children under 9 years  = 35

Probability of choosing a child under 9  = number of children under 9  / total number of children

Probability of choosing a child under 9 = 35/42

The probability of choosing a child under 9 years old is ≈ 0.83

Thus, the probability of randomly selecting  a child under the age of 9  is approximately 0.83.

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Answer:

Step-by-step explanation:

Therefore, Miranda saves approximately 22.96 meters by cutting across the diagonal instead of walking around the perimeter of the field.

Perimeter is the total length of the boundary or outer edge of a two-dimensional shape, such as a square, rectangle, triangle, or circle. It is the distance around the shape, and is measured in units such as centimeters, meters, feet, or inches. To find the perimeter of a shape, you simply add up the lengths of all its sides. For example, the perimeter of a square with sides of length 5 cm would be 4 × 5 cm = 20 cm. The perimeter of a rectangle with length 6 cm and width 4 cm would be 2 × (6 cm + 4 cm) = 20 cm.

If Miranda walks around the perimeter of the field, she will travel a distance equal to the perimeter of a rectangle, which can be calculated as follows:

[tex]Perimeter = 2(Length + Width) = 2(7m + 11m) = 2(18m) = 36m[/tex]

To cut across the diagonal of the field, Miranda will travel a distance equal to the length of the diagonal of the rectangle. This can be found using the Pythagorean theorem:

[tex]Diagonal = \sqrt(Length^2 + Width^2) = \sqrt(7m^2 + 11m^2) = \sqrt(170m^2) \approx 13.04m[/tex]

So, the distance Miranda saves by cutting across the diagonal is:

[tex]36m - 13.04m \approx 22.96m[/tex]

Rounding to the nearest hundredth of a meter gives:

≈ 22.96m to 2 decimal places

Therefore, Miranda saves approximately 22.96 meters by cutting across the diagonal instead of walking around the perimeter of the field.

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In a case whereby Shandra is giving a snack bag to each of her 4 friends. She puts 4 pear slices in each bag the number of pear slices that are there in all is 16 pear slices.

The calculation can be done in a simple way, If Shandra puts 4 pear slices in each of the 4 snack bags, then the total number of pear slices will be:

4 friends x 4 pear slices per bag = 16 pear slices

Therefore, there are 16 pear slices in all.

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Answer:

The symbols used to represent the negation of a statement are “~” or “¬”. For example, the given sentence is “If you don’t look both ways before crossing the street, then you will get hit by a car." Then, the negation of the given statement is “that u won't get hit”. Thus, if the given statement is true, then the negation of the given statement is false.

Answer:

8.36

Step-by-step explanation:

67 - 1

8. 82

= 2747 - 4

328

=2743

328

= 8.36

Answer:

8x+26

Step-by-step explanation:

distribute the 5 into the numbers in the parentheses. you get (5x+20) then do the same with 3(x+2) which wll be (3x+6) now add like terms, which are 5x+3x=8x and 20+6=26. boom 8x+26.

8x + 26

multiply the outside number by the inside numbers and add them. remember, if the variable is singular example x, then it equals 1 :) I hope this helps you understand, I'm currently doing algebraic expressions.

An equation of a line where slope is -32 and y-intercept is 7 is y = -32x + 7.

An equation of a line where slope is 5 and x-intercept is 2 is y = 5x - 10.

An equation of a line that is going through the points (-1, -5) and (4, -2) is y = 3x/5 - 22/5

An equation of a line that is going through the points (0, 1) and (2, -2) is y = -x/2 + 1

An equation of a line where m = 4 and and b = -76 is y = 4x - 76.

An equation of a line that passes through the points (1, 3) and (4, 12) with a y-intercept of 0 is y = 3x + 0.

In Mathematics and Geometry, the slope-intercept form of the equation of a straight line is given by this mathematical expression;

y = mx + c

Where:

First of all, we would determine the slope of this line;

Slope (m) = (y₂ - y₁)/(x₂ - x₁)

Slope (m) = (-2 + 5)/(4 + 1)

Slope (m) = 3/5

At data point (-1, -5) and a slope of 3/5, a linear equation for this line can be calculated by using the point-slope form as follows:

y - y₁ = m(x - x₁)

y + 5 = 3/5(x + 1)  

y = 3x/5 + 3/5 - 5

y = 3x/5 - 22/5

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The fraction of the panel, that is left after cutting out the hole is [tex]\frac{11}{12}[/tex]

The area of a rectangle equals the product of its 2 sides. The area of a triangle is equal to half of the product of the base and height.. If we choose one of the sides as the base, then for area calculation,  for height we have to use the height of the opposite vertex from this base. To find it, we have to drop a perpendicular from the opposite vertex onto the base. The area of a parallelogram is the product of the length of the base and the perpendicular distance between the two parallel sides of the parallelogram. Area of a trapezium = half of the product of the distance between the parallel sides and the sum of the length of the parallel sides. Area of a circle is [tex]\pi r^2[/tex], in which r is the radius of the given circle. Sometimes the plane figure maynot be a standard shape. In that case we have to divide the figure into suitably many parts such that, each part is a standard figure whose area we can calculate. Also sometimes we can represent an area as the difference of the area of two standard figures. In that case to find the area we have to take the difference of the areas of the two standard figures.

In our question. Initial area of the panel is (3)(2) = 6 square ft.

Area of the cutout = (1)([tex]\frac{1}{2}[/tex]) = [tex]\frac{1}{2}[/tex] square ft.

Using the formula, fraction left = [tex]\frac{6 - \frac{1}{2}}{6} = 1 - \frac{1}{12} = \frac{11}{12}[/tex]

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Required fraction left is 11/12 square feet.

What is area of rectangle?

A rectangle is a geometric shape that has four sides and four right angles. It is a type of quadrilateral and is characterized by its two pairs of parallel sides. The opposite sides of a rectangle are congruent, which means they have the same length, and the adjacent sides are perpendicular to each other.

The area of a rectangle is the total amount of space inside the rectangle and is calculated by multiplying the length of the rectangle by its width. The formula for the area of a rectangle is Area = length x width

For example, if a rectangle has a length of 6 units and a width of 4 units, the area can be calculated as:

Area = 6 units x 4 units = 24 square units

The area of the panel is 3 feet x 2 feet = 6 square feet

The area of the hole is 1 foot x 1/2 foot = 1/2 square feet

Therefore, the area left is 6 square feet - 1/2 square feet = 11/2 square feet

The fraction left is (11/2 square feet) / (6 square feet) = 11/12

Therefore, the required correct option is C.

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Answer:

Step-by-step explanation:

we can't say because we don't have a couple of coordinates

The cost per share of the technology stock is $14.

What is a variable?

In mathematics, a variable is a symbol or letter that represents a value or a quantity that can change or vary in a given context or problem. Variables are used to express mathematical relationships and to formulate equations and functions.

Let's use variables to represent the cost per share of the technology stock and the mutual fund. We can call the cost per share of the technology stock "T" and the cost per share of the mutual fund "M".

From the problem, we know:

Nora bought 100 shares of the technology stock and 200 shares of the mutual fund for a total of $3600:

100T + 200M = 3600

Erin bought 300 shares of the technology stock and 50 shares of the mutual fund for a total of $5300:

300T + 50M = 5300

We now have a system of two equations with two variables. We can solve for T and M by using elimination or substitution. Here, we will use the substitution method:

From the first equation, we can isolate T by subtracting 200M from both sides:

100T = 3600 - 200M

Divide both sides by 100 to get:

T = 36 - 2M

Now substitute this expression for T into the second equation:

300(36 - 2M) + 50M = 5300

Expand and simplify:

10M = 1100

Divide both sides by 10 to get:

M = 110

So the cost per share of the mutual fund is $110.

To find the cost per share of the technology stock, we can substitute M = 110 into either of the original equations. Let's use the first equation:

100T + 200(110) = 3600

Simplify:

100T = 1400

Divide both sides by 100 to get:

T = 14

So the cost per share of the technology stock is $14.

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Answer: A residual value of –0.8 means that the given point is 0.8 units above the line of best fit.

The equation that represents the approximate line of best fit for data, where x represents font size and y represents the number of words on one page is:

y = –38x + 922.

Therefore, the answer is y = –38x + 922.

Step-by-step explanation:

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