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jeka57 [31]
3 years ago
15

Which values make this equation true?

Mathematics
1 answer:
alex41 [277]3 years ago
4 0

When multiplying terms with exponents, just add the exponents together.


You have x^7 and x^4, so 7 +4 = 11

Y^2 and Y^5 = 2+5 = 7

so it would be -20x^11 y^7


The answer is A.) a=11, b=7

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Answer:  The length is 510 and the width is 110.

Step-by-step explanation:

To find the area of a rectangle, you will have to add the 2 times the length plus 2 times the width because  a rectangle have 4 sides. Two widths and two  lengths.

You can now use the formula  P= 2l + 2w  

were P is the perimeter , l is the length, and w is the width.

the length is 400 more than the width, so we can represent that by the equation,  l = w + 400  

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So now we will input the perimeter, length, and into the formula to solve for w.

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Check :

1240 = 2(510) + 2(110)

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1240 = 1240

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