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Vlada [557]
4 years ago
13

If a = 8 and b = 4, then b(b+ a) - b = A. 12 B. 20 C. 44 D. 52

Mathematics
2 answers:
Gemiola [76]4 years ago
6 0
C. 44 is the answer 4(4+8)-4=44
inna [77]4 years ago
6 0
Simple!
Okay first plug in the variables given to you.
4(4+8)-4=? Now lets solve.
First, in order to get rid of the paranthesis, multiply 4 by the numbers inside, which in this case are 4 and 8.
That will give us...
16+32-4. Now, remember PEMDAS?
Addition (A) comes before subtraction (S).
So lets add 16 and 32.
Thats 48.
Now 48-4= 44.
44 is our final answer (: so C
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Answer:

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Step-by-step explanation:

Since the angles are alternate-interior, both angles A and B equal the same amount. To figure out the value of <em>x</em>, you'd need to set up your equation like this:

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Once you get your <em>x</em>, you need to plug it in into the equation of angle A, which is 5x-18°:

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