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3 years ago

What is the approximate circumference of Circle C?

1 answer:

5 0

If you have the radius, then do Radius times 2 to get the diameter, then do diameter times Pi (3.14) to get the circumference
E.g. If the radius was 4, times by 2 to get the diameter so 4x2=8 then do 8x3.14 (pi) to get the circumference.

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Riley invested $1,000 in savings bonds. If bonds earn 6.75% interest compounded semi-annually, how much will riley earn in 15 ye

lara31 [8.8K]

Answer:

$2,706.86

Step-by-step explanation:

8 0

2 years ago

Simplify √5x/x √ 20 answer choices a.1/2 b.√x/2x c.√x/2

Vsevolod [243]

Answer:

Step-by-step explanation:

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3 years ago

Maria scored 72, 97, and 82 on her first three math tests. She wants to have a mean score of 82 for the quarter. How many points

Rom4ik [11]

Answer:

She needs 77 on her last test to earn an 82 for the quarter.

Step-by-step explanation:

Maria scored 72, 97, and 82 on her first three math tests.

She wants to have a mean score of 82 for the quarter.

Let us assume that she must score x on her last test to earn an 82 for the quarter.

So the average score will be,

$=\dfrac{72+97+82+x}{4}$

But the average score is given as 82, so

$\Rightarrow \dfrac{72+97+82+x}{4}=82$

$\Rightarrow 72+97+82+x=82\times 4$

$\Rightarrow 72+97+82+x=328$

$\Rightarrow x=328-72-97-82$

$\Rightarrow x=77$

3 0

3 years ago

Read 2 more answers

What is the domain of y=cot x?

MissTica

We have to find the domain of y = cotx

We know that cotx = cos x / sinx

And also when sinx becomes zero cotx becomes undefined

And again we know that value of cosx and sinx can be between -1 to 1

But value of cotx can lie in between -∞ to +∞

Just for example cot30 is cos30 / sin30

= √3/2/1/2 = √3

Therefore domain of cotx is x

x ∈ R , x ≠ πn for any integer n

5 0

3 years ago

If the perimeter of a rectangular picture frame must be less than 180 in, and the width is 26 in, what must the height h of the

valentinak56 [21]

You would form this inequality:

52 + 2x < (or equal to) 180

Then, solve as you would in an ordinary equation.

Subtract 52 from both sides of the sign. 180 - 52 = 128.

So, 2x is less than or equal to 128.
Divide 128 into two to get 64.

The height of the frame must be 64 inches.

4 0

3 years ago