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levacccp [35]
3 years ago
5

Can someone please help with this one

Mathematics
1 answer:
bagirrra123 [75]3 years ago
7 0

Answer:

m∠8 = 123°

Step-by-step explanation:

<em>∠1 and ∠8 are alternate exterior angles</em>, and since lines A and B are parallel, then <em>they must be congruent</em>.

So, m∠1 = m∠8

Substitute: 123 = m∠8

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Step-by-step explanation:

length = width + 4

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using the first in the second equation

(width + 4)×width = 77

width² + 4width = 77

now, what square or squaring factors can create this ?

we are looking for (width + a)(width + b).

we know, this is

width² + (a+b)width + ab

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1, 3 and 2, 2, if we are only looking at whole numbers.

and which of the possibilities can we use to turn 77 into a square number ?

81 is only 4 away ...

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aha !

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and then

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2 years ago
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3 years ago
What are the coordinates of the new triangle
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Answer:

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