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const2013 [10]
2 years ago
8

Find the measure of the missing angle. a 66°

Mathematics
1 answer:
yanalaym [24]2 years ago
7 0

Answer:

24°

Step-by-step explanation:

the total angle, made up from both a and 66°, is a mini-square, as you can see. this represents a right angle of 90°

thus, a and 66° combine to make 90°

a + 66° = 90°

subtract 66 from both sides to get a

a = 24°

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Step-by-step explanation:

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8 0
2 years ago
Solve for x show all your work. 10x + 15 = 5x - 10​
sdas [7]

Answer:

x=-5

Step-by-step explanation:

10x + 15 = 5x-10

-5x            -5x

5x+15 = -10

    -15     -15

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/5      /5

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7 0
3 years ago
PLEASE HELP THE QUESTION IS BELOW!!
irina [24]

Answer:

Step-by-step explanation:

B=3x-2

C=12x+2

D=B=3x-2 (Vertically opposite angles)

A=?

Now; we know, A+B+C+D=360 deg.

=>A=360-(B+C+D)

  =360-(3x-2+12x+2+3x-2)

  =360-(18x-2) ----[1]

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=> x=180/15

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subsitute [2] in [1];

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   = 146 deg.

   

So, the correct answer is (D).

Hope the answer is useful.  

8 0
3 years ago
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