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musickatia [10]
3 years ago
10

Please help im so confused ??

Mathematics
2 answers:
Sever21 [200]3 years ago
7 0
When finding the volume of this shape, there would practically be a formula that we would have to use, in order to solve this on how we are suppose to do.

We know that the radius would then be 4, and therefore, we would just plug this in into the formula which would be illustrated below.

\boxed{V= \frac{4}{3}  \pi r^3}

All we would have to do, is to plug the number 4 into the proper location in the formula.

In a decimal form, your correct answer would then be 268.08.

By as we can see above, we would have to convert the decimal form, into a fraction form, and this would be shown below.

\left[\begin{array}{ccc}\boxed{3*8=24-8=256/3}\end{array}\right]

Your correct answer should be (option a)


lora16 [44]3 years ago
6 0
The answer is A
hope this helps
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The graph shows the relationship between the total cost and the number of gift cards that Raj bought for raffle prizes.
BabaBlast [244]

<u>The problem is as following:</u>

The graph shows the relationship between the total cost and the number of gift cards that Raj bought for raffle prizes. What would be the cost for 5 of the gift cards? $80, $90, $100 Or $110

===============================================================

<u>Solution</u>:

The points of the figure represents a straight line

The general form of the straight line is  ⇒ y = mx + c

where m is the slope and c is constant

let x ⇒ The number of gifts cards , y ⇒ Total cost (in $)

we will find m and c using the points (1,20) , (2,40)

The slope = m = \frac{y_{2} - y_{1}}{x_{2}-x_{1}} =\frac{40-20}{2-1} =\frac{20}{1}=20

∴ y = 20x + c

Substitute with the point (1,20) ⇒ y = 20 at x = 1

∴ 20 = 20 * 1 + c

∴ 20 = 20 + c

∴ c = 0

∴ The equation of the line ⇒⇒⇒ y = 20x

To find the cost for 5 of the gift cards substitute with x = 5

∴ y = 20 * 5 = 100

So, the cost for 5 of the gift cards = $100

<u>The correct answer is option 3 ⇒⇒⇒ $100</u>

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