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iris [78.8K]
3 years ago
10

Can some one answer this fast for me I have been work on it for a long time thank you.​

Mathematics
1 answer:
kupik [55]3 years ago
7 0

Answer:

(a) (πa^2/2)+8a

(b) πa^2/2 represent the area of the semicircle in the figure while

8a is the area of the rectangle

Step-by-step explanation:

(c) area = (22/7*2^2/2)+8*2

=44/7*16=100.57in^2

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ira [324]
<h2>Solving Equations</h2>

To solve linear equations, we must perform inverse operations on both sides of the equal sign to <em>cancel values out</em>.

  • If something is being added to x, subtract it from both sides.
  • If something is being subtracted from x, add it on both sides.
  • Same with multiplication and division. If x is being divided, multiply. If x is being multiplied, divide.

We perform inverse operations to<em> combine like terms</em>. This means to get x to one side and everything else on the other.

<h2>Solving the Questions</h2><h3>Question 1</h3>

5x+7=15

Because 7 is being added to x, subtract it from both sides:

5x+7-7=15-7\\5x=8

Because x is being multiplied by 5, divide both sides by 5:

\dfrac{5x}{5}=\dfrac{8}{5}\\\\x=\dfrac{8}{5}

Therefore. x=\dfrac{8}{5}.

<h3>Question 2</h3>

7x+4=5x-18

Here, we can group all the x values on the left side of the equation. Subtract 5x from both sides:

7x+4-5x=5x-18-5x\\2x+4=-18

To isolate x, subtract 4 from both sides:

2x+4-4=-18-4\\2x=-22

Divide both sides by 2:

\dfrac{2x}{2}=\dfrac{-22}{2}\\\\x=-11

Therefore, x=-11.

6 0
2 years ago
How to add and subtracts decimals from whole nubers
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Answer:

ok so to do this you line them up like normal then always remember to make sure your decimal is in the right spot if you need more help there are many easy solutions online also if you need more help you can always send me a picture of the question or tell me it and it will make things a lot easier :)

Step-by-step explanation:

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Add all the miles
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Which is the best estimate for the sum of 3/8 and 1/12¿
SashulF [63]
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<span> if you add 3/8 and 1/12 you get 11/24</span>
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