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3 years ago

Can you pls show me the work for this? BRAINLIEST!!!

Mathematics

1 answer:

MaRussiya [10]3 years ago

5 0

A)A cylinder with height 4 inches and radius 4 inches.

Step-by-step explanation:

Volume of a Cylinder = \pi r^2 h

Next, we determine the volume of the options being considered by Tommy.

Option A:

A cylinder with height 4 inches and radius 4 inches.

Volume =\pi *4^2*4=64\pi cubic inches

Option B

A cylinder with height 7 inches and diameter 4 inches.

Volume =\pi *2^2*7=28\pi cubic inches

Option C

A cylinder with height 5.5 inches and radius 3 inches.

Volume =\pi *3^2*5.5=49.5\pi cubic inches

Option D

A cylinder with height 6.5 inches and Base Area B = 4 pi inches squared.

Volume =4*6.5*\pi=26 \pi cubic inches

The cylinders in Option A will hold more soup than the other two cans Tommy is considering.

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Sally gave her brother $3.95 in quarters and dimes. If the number of quarters is 6 more than the number of dimes, how many quart

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7 dimes and 13 quarters is the exact change

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2 years ago

Read 2 more answers

Is y=4 a function, a relation, or is it both?

Maurinko [17]

Answer:

Function

Step-by-step explanation:

The reason it is a function is because its saying y=x. Then you just plug in the number(s) to get the function y=4.PLEASE MARK BRAINLIEST thank you!!!!!!!!!

3 0

3 years ago

HELP IM FAILING MATH OOOOFFFF

meriva

The point-slope form:

$y-y_1=m(x-x_1)\\\\m=\dfrac{y_2-y_1}{x_2-x_1}$

We have the points $(-4,\ -1)$ and $\left(\dfrac{1}{2},\ 3\right)$ .

Substitute:

$m=\dfrac{3-(-1)}{\frac{1}{2}-(-4)}=\dfrac{4}{4\frac{1}{2}}=\dfrac{4}{\frac{9}{2}}=4\cdot\dfrac{2}{9}=\dfrac{8}{9}\\\\y-(-1)=\dfrac{8}{9}(x-(-4))\\\\y+1=\dfrac{8}{9}(x+4)$

The standard form: Ax + By = C

$y+1=\dfrac{8}{9}(x+4)\qquad\text{multiply both sides by 9}\\\\9y+9=8(x+4)\qquad\text{use distributive property}\\\\9y+9=8x+32\qquad\text{subtract 9 from both sides}\\\\9y=8x+23\qquad\text{subtract 8x from both sides}\\\\-8x+9y=23\qquad\text{change the signs}\\\\\boxed{8x-9y=23}$

4 0

3 years ago

Answer please cuz I'm very confused

Anestetic [448]

5x + 3y = - 53

the equation of a line in ' slope- intercept form ' is y = mx + c

where m is the slope and c the y-intercept

rearrange 3x - 5y = - 15 into this form to obtain m → (subtract 3x from both sides)

- 5y = - 3x - 15 → divide all terms by - 5 )

y = $\frac{3}{5}$ x + 3 → in slope-intercept form with m = $\frac{3}{5}$

given a line with slope m then the slope m₁ of a line perpendicular to it is

m₁ = - $\frac{1}{m}$ = - 1 ÷ $\frac{3}{5}$ = - $\frac{5}{3}$

partial equation is y = - $\frac{5}{3}$ x + c

to find c substitute ( - 7, - 6) into the partial equation

- 6 = $\frac{35}{3}$ + c ⇒ c = - 6 - $\frac{35}{3}$ = - $\frac{53}{3}$

y = - $\frac{5}{3}$ x - $\frac{53}{3}$ → in slope intercept form

multiply all terms by 3

3y = - 5x - 53 → ( add 5x to both sides )

5x + 3y = - 53 → in standard form

6 0

3 years ago

Assuming that the population is normally distributed, construct a 9090% confidence interval for the population mean for each o

jasenka [17]

Given:

Set A: 1 4 4 4 5 5 5 8

Mean: 4.5

Standard dev: 1.9

Set B:

Mean: 4.5

Standard dev: 2.45

% = 90

Set A:

Standard Error, SE = s/ √n = 1.9/√8 = 0.67

Degrees of freedom = n - 1 = 8 -1 = 7

t- score = 1.89457861

Width of the confidence interval = t * SE = 1.89457861* 0.67 = 1.272685913

Lower Limit of the confidence interval = x-bar - width = 4.5 - 1.272685913 = 3.23

Upper Limit of the confidence interval = x-bar + width = 4.5 + 1.272685913 = 5.77

The 90% confidence interval is [3.23, 5.77]

Set B:

Standard Error, SE = s/ √n = 2.45/√8 = 0.87

Degrees of freedom = n - 1 = 8 -1 = 7

t- Score = 1.89457861

Width of the confidence interval = t * SE = 1.89457861* 0.87 = 1.641094994

Lower Limit of the confidence interval = x-bar - width = 4.5 - 1.641094994 = 2.86

Upper Limit of the confidence interval = x-bar + width = 4.5 + 1.641094994 = 6.14

The 90% confidence interval is [2.86, 6.14]

We can obviously see that sample B has more variation in the scores than sample A. The fact that the standard deviation is 2.45 for B and 1.9 for A). Therefore, they yield dissimilar confidence intervals even though they have the same mean and range.

6 0

3 years ago