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butalik [34]
3 years ago
9

Magan bought an electric bill at 85% of the regular price she paid $32.89 for the drill what was the regular price

Mathematics
1 answer:
Natasha2012 [34]3 years ago
4 0

Answer:

$38.69

Step-by-step explanation:

To find the regular price, create a proportion.

\frac{32.89}{x}=\frac{85}{100}

To solve for the regular price x, cross multiply the numerator and denominator of each fraction.

32.89*(100) = x(85)

3289=85x

38.69 = x

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I believe its a trapezoid. Sorry if I'm wrong.

Step-by-step explanation:

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jessy took out a loan of $16,500 over 5 years at 4.2% interest to purchase a new car. how much will she pay in interest on the l
lbvjy [14]

Answer:

B

Step-by-step explanation:

First, converting R percent to r a decimal

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then, solving our equation

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The simple interest accumulated

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3 years ago
If the half-life of a radioactive substance is 2,800 years, then at what rate is it decaying?
vlada-n [284]

Answer:

0.0001075

Step-by-step explanation:

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6 0
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Please help and explain questions 20-22
zmey [24]
Hello!

The formula for circumference is 2\pi r and the formula for area of a circle is \pi r^{2}. Armed with these formulas, we can begin to find the circumferences and areas of the circles.

20. 
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C = 2 \pi (6.5)
C = 13 \pi
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A = \pi r^{2}
A = \pi (6.5)^{2}
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A = 132.7

The circumference of the circle is 40.8 in and the area of the circle is 132.7 in².

21.
[Since we are given the diameter for this problem, to find the circumference, we no longer need to multiply the radius by 2 as in 2 \pi r because the diameter is the radius × 2. For \pi r^{2} we do need to divide the diameter by 2.]

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The circumference of the circle is 49.3 in and the area of the circle is 193.5 in².

And that is all there is to it. I hope this helps you! (:
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