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CaHeK987 [17]
4 years ago
9

What is the value of x in the regular polygon below? A. 40 B. 120 C. 60 D. 150

Mathematics
1 answer:
Liono4ka [1.6K]4 years ago
4 0

Answer:

A

Step-by-step explanation:

The sum of the interior angles of a polygon is

sum = 180° (n - 2) ← n is the number of sides

Here n = 6, thus

sum = 180° × 4 = 720°

Thus each interior angle = 720° ÷ 6 = 120° and therefore

3x = 120 ( divide both sides by 3 )

x = 40 → A

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How much time would it take to earn $45 simple interest on an investment of $790 if the annual rate of return was 3.4%?
Tanzania [10]

Answer:

<u>I will take around 1 year and 8 months to earn $ 45 of interest on this investment</u>

Step-by-step explanation:

1. Let's review the information provided to us to answer the question correctly:

Interest earned = $ 45

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Annual simple interest rate = 3.4% = 0.034

2. How much time would it take to earn $45?

Let's recall the formula for calculating the simple interest of an investment:

A = P * (1 + rt)

Replacing with the values we already have:

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t = 1.68 (Rounding to the next hundredth)

<u>t ≅ 1 year and 8 months</u>

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