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azamat
3 years ago
10

I need to figure out how to solve this and the answer

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

Answer:

C=13

Step-by-step explanation:

Ok, so those to angles are going to equal 90*.

First, you wan to setup your equation,

<em>(2c-4) + (5c+3) = 90</em>

now you want to add the angles

<em>7c -1 = 90</em>

isolate the variable .

Add 1 to both sides

<em>7c=91</em>

Now divide 7 from both sides

<em>c=13.</em>

To check our work we will plug in for C.

<em>2(13)-4 + 5(13)+3=90</em>

<em>26 - 4 + 65 + 3=90</em>

<em>90=90</em>

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