Question

what is the value of x? (5x)° 15° 15 21 26 105

Explanation:

Step1: Note right - angle relation

The angle composed of $5x$ and $15^{\circ}$ is a right - angle, so $5x+15 = 90$.

Step2: Solve for x

Subtract 15 from both sides: $5x=90 - 15=75$. Then divide both sides by 5, $x=\frac{75}{5}=15$.

Answer:

15