Question

Please help!
What is rhe answer to this question?
​

Answer 1

40°

Explanation:

To solve for x:

1. Turn this into an algebraic expression: (4x + 12) + (6x + 8) = 90
2. Combine like terms: (4x + 6x) + (12 + 8) = 90
3. Simplify: 10x + 20 = 90
4. Subtract 20 from each side, so it now looks like this: 10x = 70
5. Divide each side by 10 to cancel out the 10 next to x. It should now look like this: x = 7

Plug the value of x in, to solve for angle m∠1:

1. 4(7) + 12
2. Multiply: 4(7) = 4 × 7 = 28
3. Plug 28 in: 28 + 12
4. 28 + 12 = 40°

I hope this helps!