12(5+2y)=4y-(6-9y) How to Solve

Mathematics

1 answer:

kvv77 [185]3 years ago

7 0

Answer:

y = -6

Step-by-step explanation:

12 (5 + 2y) = 4y- (6 - 9y)

= 60 + 24y = 4y - 6 + 9y

= 60 + 24y = 13y - 6

= 24y - 13y = -6 - 60

= 11y = -66

y = -6

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The answer to your question is below

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Process

1.- Convert the second term to sines

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2.- Convert cos²x/sin²x to cot²x

csc²x - cot²x = 1

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3 years ago

Bill draws a regular octagon. He divides the octagon into eight congruent isosceles triangles. What are the measures of the thre

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See the picture attached to better understand the problem

we know that
the formula for calculate the sum of the internal angles in a regular polygon is
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for n=8
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1080/8=135°
so
in the figure
∠ BAD=135°
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∠ ABC=67.5°
∠ BCA=45°