Question

Can someone help me find the answer?

Answer 1

Answer: 16.2

Explanation:

3x+11+ 8x+2=90

then subtract 3 on both sides (8-3) to equal 5x

then subtract 2 from 11

so you should have 9+5x= 90

subtract 9 from 90

so 5x=81 and then divide to get 16.2

Answer 2

(3x+11) = 32 degrees

(8x+2) = 58 degrees

Explanation:

The two expressions equal 90 degrees when added together, so we use this equation to find out their values:

(3x+11) + (8x+2) = 90
11x+13 = 90
11x+13-13 = 90-13
11x = 77
11x/11 = 77/11
x = 7

Now that we know x equals 7, we can factor it in both of the expressions to find their true values:

3x+11
3(7)+11
21+11
= 32 degrees

8x+2
8(7)+2
56+2
= 58 degrees

We know this is correct because both values equal to 90 degrees:

32 + 58 = 90