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3 years ago

John builds a square dog pen that has an area of 81 square feet. He then builds a

Mathematics

1 answer:

Fiesta28 [93]3 years ago

8 0

Answer:

21.0%

Step-by-step explanation:

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Solve.<br><br><br><br> –29.7 + (–11.6) =

kodGreya [7K]

-29.7 + (-11.6) =

First, simplify your brackets. / Your problem should look like: $-29.7 - 11.6$
Second, subtract. / Your problem should look like: $-41.3$

Answer: -41.3

5 0

3 years ago

Read 2 more answers

Find the circumference of the circle? D=6ft

Furkat [3]

The formula for circumference is C = πd.

We can just use the approximate for π, which is 3.14

No we have everything we need and just need to plug our numbers in.

C = 3.14 x 6

C = 18.84ft

Make sure to check what the question is asking for. Some questions say to use 3.14, and others say to use the π symbol on the calculator. They give slightly different answers.

If it does say to use the π symbol, make sure to check how they want you to round it.

Hope this helps!

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3 years ago

Read 2 more answers

Which explanation can be used to derive the formula for the circumference of a circle?

Gelneren [198K]

Answer: The answer is the first explanation.

Step-by-step explanation: We are given five different options and we are to select which explanation is correct to derive the formula for a circumference of a circle.

Let 'C' be the circumference and 'd' be the diameter of a circle. Now, we will write the ratio of the circumference to the diameter as

$\dfrac{\textup{C}}{\textup{d}}.$

Also, we know that

$\dfrac{\textup{C}}{\textup{d}}=\pi.$

And diameter of a circle is twice the radius, so

$d=2r.$

Therefore,

$\dfrac{\textup{C}}{2\textup{r}}=\pi\\\\\Rightarrow \textup{C}=2\pi \textup{r}.$

This is the formula for the circumference of a circle. Since this explanation matches exactly with the first option, so the correct option is

(a). Find the relationship between the circumference and the diameter by dividing the length of the circumference and length of the diameter. Use this quotient to set up an equation to showing the ratio of the circumference over the diameter equals to π . Then rearrange the equation to solve for the circumference. Substitute 2 times the radius for the diameter.

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3 years ago

Thomas elementary has 150 students who participate in sports. If 20% of these students play baseball, how many students play bas

Rashid [163]

Answer:

30 kids

Step-by-step explanation:

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3 years ago

Jessica gets her favorite shade of purple paint by mixing 2 cups of blue paint with 3 cups of red paint.How many cups of red pai

Strike441 [17]

She needs 12 cups of red paint.

3:2

12:8

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4 years ago