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3 years ago

Surface area of a sphere with a diameter of 17.5 inches

Mathematics

2 answers:

Tanzania [10]3 years ago

8 0

Answer:

surface area of the sphere $=961.59inches^2$

Step-by-step explanation:

Surface area of a sphere= $4*\pi *r^2$

$Diameter= 17.5 inches$

$Radius= 17.5/2= 8.75 inches$

Surface area of the sphere $=4*\pi *8.75.8.75$

$=4*3.14*8.75*8.75$ : $\pi =3.14$

$=4*3.14*76.57\\\\=12.56*76.56\\\\$

$=961.59inches^2$

So, the surface area of the sphere $=961.59inches^2$

statuscvo [17]3 years ago

6 0

Answer:

Ans is behind

Step-by-step explanation:

hope it helps you

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Vinil7 [7]

Answer:

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Step-by-step explanation:

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3 years ago

PLEASE HELP ASAP GIVING BRAINLIEST

Lady_Fox [76]

Answer:

Part 1) $y=32.5x+11.95$

Par 2) see the explanation

Part 3) $\$401.95$

Step-by-step explanation:

Part 1) Write an equation in slope intercept form to represent this problem

Let

x ----> the number of tickets

y ---> the total cost

The linear equation in slope intercept form is equal to

$y=mx+b$

where

m is the slope or unit rate

b is the y-intercept (one-time processing fee)

In this problem we have

$b=\$11.95$

ordered pairs (4,141.95) and (7,239.45)

Find the slope

The formula to calculate the slope between two points is equal to

$m=\frac{y2-y1}{x2-x1}$

substitute the values in the formula

$m=\frac{239.45-141.95}{7-4}$

$m=\frac{97.5}{3}$

$m=32.5$

substitute the values in the linear equation

$y=32.5x+11.95$

Part 2) What does your slope represent in this problem? What does your y-intercept represent in this problem?

a) The slope of the linear equation represent the unit rate, so the slope represents the cost of one ticket

$m=\$32.5\ per\ ticket$

b) The y-intercept is the value of y when the value of x is equal to zero

In this context, the y-intercept represent the one-time processing fee

$b=\$11.95$

Part 3) Use the equation to find how much Alan would have to pay for 12 tickets

For x=12 tickets

substitute in the linear equation

$y=32.5(12)+11.95$

$y=\$401.95$

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3 years ago

A point with coordinates (a, b) is plotted on a coordinated plane. The values of a and b can be any positive or negative integer

Diano4ka-milaya [45]

Answer:

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Step-by-step explanation:

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Hope this helps!

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