5 Mario places a laptop on a desk. He adjusted the screen so that the screen is at an angle of 81° with the desk. What is the measure of the unknown angle? Explain.

Mario places a laptop on a desk. He adjusted the screen so that the screen is at an angle of 81° with the desk.

We are asked to find the measure of the unknown angle x

Recall the straight-angle property,

The sum of angle x and angle 81° must be equal to 180°

So, we can write

Let us solve the above equation for the unknown angle x

Therefore, the unknown angle x is 99°

ans789

step-by-step explanation:

the answer is:

the correct option:

b.

to solve the problem, we need to remember how to operate to simplify exponential expressions using the logarithms.

we are given the equation:

then, using placing logarith with base 7 on both sides of the equation, we have:

so, rounding the obtained result to two decimal places (nearest hundreth), we have:

hence, we have that the correct option:

b.

have a nice day!