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snow_tiger [21]
3 years ago
12

Can someone help me solve this equation? will give brainliest

Mathematics
1 answer:
valentinak56 [21]3 years ago
5 0

Answer:

a = -10

Step-by-step explanation:

33 - 4a = 73

To get <em>a</em> by itself, you must move 33 to the other side. To this, you must subtract it from both sides, canceling it out on the left side.

You will be left with: -4a = 73-33

Subtract 73 and 33, which will get you 40.

Now the equation is -4a = 40

To get <em>a </em>by itself, divide -4 into both sides. Doing this will isolate <em>a</em>.

The equation you will have after that is a = 40/-4.

Divide 40 by -4, which will get you -10.

Therefore, a = -10.

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The window has a shape of a semi-circle (half of a circle).

We know the diameter d = 12 ft.

The area of a (complete) circle is given by the formula:
A = π × r²

The radius can be found by halving the diameter:
r = d ÷ 2
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Therefore the area of the circle will be:
<span>A = π × r²
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3 0
3 years ago
How much is a 20% increase to $771?
Irina-Kira [14]

Answer:

$154.20

Step-by-step explanation:

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20% of $771 =

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5 0
3 years ago
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A quantity with an initial value of 3700 decays exponentially at a rate of 6% every 5
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Answer:

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Answer:

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