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suter [353]
3 years ago
12

3x - 9 + 4x Please Help

Mathematics
2 answers:
Wewaii [24]3 years ago
7 0

Answer:

Add like terms 7x - 9

Step-by-step explanation:

Sveta_85 [38]3 years ago
7 0
Add the 4 and 3 then you will get

7x-9
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What is the sum of the measures of the exterior angles of this triangle?
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Answer:

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Step-by-step explanation:

We need only remember that the sum of the measures of the interior angles of a triangle is 180°.  Angle c and 112° form a pair of "straight angles," so they add up to 180°; as a consequence, Angle c = 180° - 112°, or 68°.

With two of the interior angles now known, we can calculate the third, Angle A:  It is 180° less (51° +  68°), or 180° - 119°, or 61°.

That means that the measure of Angle B is 180° - 61° = 119°

Looking at the pair C and 112°, we identify the exterior angle as 112°.

Looking at the pair A and B, or 61° and 119°, we identify the exterior angle as 119°.

Finally, looking at the pair 51° and (180° - 51°), or

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The class was given a test that had a total of 125 points possible. A student then earned an 84% on the test. What are the total
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