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MrRissso [65]
3 years ago
6

Simplify : y^-7 / y^-4

Mathematics
1 answer:
dexar [7]3 years ago
3 0

Answer:

\frac{1}{y^{3} }

Step:

Since -7--4= -3

And you want in a postive exponent. In order for the sign to change from negative to postive you divide it by 1.

Hope this helps ʕ•ᴥ•ʔ

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Help,anyone can help me do quetion.​
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Answer:

(a) x = 128^{o}

(b) x = 74^{o}

Step-by-step explanation:

A. sum of angles in a polygon = (n - 2) 180

The polygon given is an irregular pentagon, where n = 5

So that;

sum of angles in a pentagon = (5 - 2) 180

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Thus,

x + 90 + 76 + 110 + 136 = 540^{o}

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x = 540^{o} - 412

x = 128^{o}

B. The polygon given is an irregular pentagon, where n = 5.

Let the supplementary angle with angle 38 be represented by y,

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y = 180 - 38

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Let the supplementary angle with x be represented by z, so that;

z + 72 + 120 + 100 + 142 = 540^{o}

z + 434 = 540^{o}

z = 540^{o} - 434

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z = 106^{o}

But, x + z = 180^{o}

Then;

x + 106^{o} = 180^{o}

x = 180^{o} - 106^{o}

  = 74^{o}

x = 74^{o}

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