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3 years ago

Please show all work! Thank you so much

Mathematics

1 answer:

kolbaska11 [484]3 years ago

3 0

The sum of the external angles of every polygon = 360 degrees
So the n-gon must have its interior angle sum = 360 degrees also.

So what polygon has interior angle sum = 360?

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The first person to answer this gets brainiest. But the answer has to be correct.

inn [45]

n divided by 4 is equal to n/4

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3 years ago

Read 2 more answers

Need some help with this photo it would be much appreciated :)

masya89 [10]

Answer:

12.6

Step-by-step explanation:

c=2 x 3.14 x r

2 x 3.14= 6.28

6.28 x 2= 12.56

4 0

3 years ago

What percent of the surface area of the ottoman is green (not including the bottom)? Round to the nearest tenth.

givi [52]

768.0%

Step-by-step explanation:

16x8x6=768

Rounded to the nearest tenth 768.0%

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3 years ago

Idk how to solve this exponent problem ?

Wewaii [24]

Answer:256

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3 years ago

Mai invests $20,000 at age 20. She hopes the investment will be worth $500,000 when she turns 40. If the interest compounds cont

love history [14]

Answer:

$\approx$ 17.5% per annum

Step-by-step explanation:

Given:

Money invested = $20,000 at the age of 20 years.

Money expected to be $500,000 at the age of 40.

Time = 40 - 20 = 20 years

Interest is compounded annually.

To find:

Rate of growth = ?

Solution:

First of all, let us have a look at the formula for compound interest.

$A = P \times (1+\frac{R}{100})^T$

Where A is the amount after T years compounding at a rate of R% per annum. P is the principal amount.

Here, We are given:

P = $20,000

A = $500,000

T = 20 years

R = ?

Putting all the values in the formula:

$500000 = 20000 \times (1+\frac{R}{100})^{20}\\\Rightarrow \dfrac{500000}{20000} =(1+\frac{R}{100})^{20}\\\Rightarrow 25 =(1+\frac{R}{100})^{20}\\\Rightarrow \sqrt[20]{25} =1+\frac{R}{100}\\\Rightarrow 1.175 = 1+0.01R\\\Rightarrow R \approx17.5\%$

So, the correct answer is $\approx$ 17.5% per annum and compounding annually.

6 0

3 years ago