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larisa [96]
3 years ago
9

How do you write number 20 in exponential form? Explain please.

Mathematics
1 answer:
SOVA2 [1]3 years ago
3 0
It is (7x)^(2/3). If we look at our exponent laws (SEE ATTACHMENT), we can see that we can express our equation as so.

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the length of a rectangle is three less than twice its width. If the perimeter is 48, find the length.
Alisiya [41]

length = 15

let the width = w then length = 2w - 3

Perimeter = 2(length + width)

                = 2(2w - 3 + w) = 2( 3w - 3) = 6w - 6 = 48

hence 6w = 48 + 6 = 54 ⇒ w =\frac{54}{6}= 9

Thus length = 2w - 3 = (2× 9) - 3 = 18 - 3 = 15


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