Question

Answer options are

A. 6
B. 8
C. 4
D. 0

Answer 1

the answer is b.8

In the picture. both 51 degrees and 4x+7 are connecting to form a 90 degree angle.

So, we need to set an expression where you add 51 and 4x+7 and equal it to 90.

4x+7+51=90

now solve:

4x+58=90.

4x=90-58

4x=32

x=32/4

x=8 answer.

Answer 2

B. 8

Explanation:

The angle measure given as 51° and the angle measure represented with (4x + 7)° are complementary angles which means their sum is equal to 90°.

We can write the following equation to find the value of x based on above mentioned information:

51° + (4x + 7)° = 90°

• Add like terms.

58° + 4x = 90°

• Subtract 58 from both sides.

4x = 32

• Divide both sides with 4.

x = 8