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o-na [289]
4 years ago
6

Simplify the expression.

Mathematics
1 answer:
Alja [10]4 years ago
4 0

Answer:

-2r^3+4r^2+12r-4

Step-by-step explanation:

6r^3-2r^2+12r-4-8r^3+6r^2

(6r^3-8r^3)+(-2r^2+6r^2)+12r-4

simplify

-2r^3+4r^3+12r-4

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WUCLUJ
mash [69]

Answer:

81 degrees

Step-by-step explanation:

A quadrilateral has four interior angles which sum up to 360 degrees.

As we are given that two angles are right angles which means the sum of two angles will be 180 degrees and the third angle is 99 degrees.

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4 years ago
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3 years ago
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