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GuDViN [60]
3 years ago
13

No need for an explanation it is option

Mathematics
2 answers:
Zolol [24]3 years ago
5 0

Answer:

II) 78

Step-by-step explanation:

2x - 6 + 7x + 15 = 90

9x + 9 = 90

9x = 81

x = 9

<ABC:

7x + 15

7(9) + 15

78

Dimas [21]3 years ago
4 0

Answer and Step-by-step explanation:

To find the measure of angle ABC, we need to find what x is first. We accomplish this by adding together the two angles and setting it equal to 90.

2x - 6 + 7x + 15 = 90

<u>Combine like terms.</u>

9x + 9 = 90

<u>Subtract 9 from both sides.</u>

9x = 81

<u>Divide both sides by 9.</u>

x = 9

We get x to be 9.

Now, we can plug this in for angle ABC.

7(<u>9</u>) + 15

<u>Multiply 7 and 9 together.</u>

63 + 15

<u>Add 63 and 15 together.</u>

78

The measure of ABC is 78.

That means the answer is <u>II) 78</u>.

<em><u>#teamtrees #PAW (Plant And Water)</u></em>

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