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adell [148]
3 years ago
10

I'm so stuck on this ​

Mathematics
2 answers:
Marina CMI [18]3 years ago
7 0

Answer:150

Step-by-step explanation:

Let's name the angle beside A: angle1

the angle beside B: angle2

angle1= angle2 because the lines are parallel.

Therefore 180-angle1=180-angle2

which is the same as A=B

So 8x-10=3x+90

5x=100

x=20

B= 3x+90

=60+90

=150

raketka [301]3 years ago
6 0

Answer:

150°

Step-by-step explanation:

<h2><u>Find the angle </u></h2>

since the lines are parallel

and also because a Z angle is formed. this means :

that angle A = angle B

hence we can solve by putting:

8x - 10 = 3x + 90

make x the subject of formula

8x - 3x = 90 + 10

5x = 100

x = 100/5

<h3>x = 20°</h3>

<h3><u>therefore place the value of x into the equation to find B </u></h3>

B = 3x + 90

  = 3* 20 + 90

   = 60 + 90

    = 150°

<h3><u>angle for B is 150°</u></h3>
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