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3 years ago

The area of a circle is 706.9 square inches. Find the radius

Mathematics

1 answer:

antoniya [11.8K]3 years ago

4 0

Answer:

15 inches

Step-by-step explanation:

The area of a circle is pi r^2. We basically have to work backwards. I divided it fist by 3.14 which is the value of pi. I got 225.127, but I rounded it to 225. I found the square root of this which is 15. If we check the work. 15^2 is 225, and 225 times pi is 706.9.

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There are 45 students in a class. The ratio of boys to girls is 2:3. How many boys are there in the class?

Lena [83]

Answer:

18 boys

Step-by-step explanation:

we add 2 and 3 because they are equal parts:

2+3=5

Then we divide 45 by 5 because we want to find what 1 part equals"

45/5=9

We now do 9*2 to get an answer of:

9*2=18

hope this makes sense!

7 0

3 years ago

Help, please! sorry I have so many of these

Mademuasel [1]

Median = 70.

If you arrange all the numbers in ascending order, 70 will be the middle number.

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3 years ago

On a coordinate plane, point B(–6, 1) is translated to B prime(–3, –2). Indira uses these steps to find a rule to describe the t

Lunna [17]

Answer:

The rule of the translation is (x,y) -----> (x+3,y-3)

The translation is 3 units at right and 3 units down

Step-by-step explanation:

we have that

The translation of point B to point B' is

B(-6,1) -----> B'(-3,-2)

(x,y) -----> (x+a,y+b)

B(-6,1) ----> (-6+a,1+b)

Find the value of a

$-6+a=-3$

solve for a

$a=-3+6\\a=3$

Find the value of b

$1+b=-2$

solve for b

$b=-2-1\\b=-3$

therefore

The rule of the translation is

(x,y) -----> (x+3,y-3)

That means ----> The translation is 3 units at right and 3 units down

3 0

3 years ago

Read 2 more answers

What is 5.84x10 to the power of 0 in standard form

Brums [2.3K]

Anything raised to the power of 0 is 1. So standard form = 5.84

7 0

3 years ago

Can someone please solve this one? You can just give the answer and no explanation, I just need to get this in real quick.

Inessa05 [86]

Answer:

Step-by-step explanation:

1. T

2. F

3. F

4. T

5. F

6. T

3 0

3 years ago