Question

Hi, can you help me with this question, Find m < B. The answer options are:11375390Pic attached of a Triangle with 3 sides, ABC

Answer 1

The sum of the angles in the triangle is 180 degrees.

the given trinagle is a right-angle triangle.

thus,

`\begin{gathered} 90^(\circ)+(2x+15)^(\circ)+(5x-2)^(\circ)=180 \\ 90+2x+15+5x-2=180 \\ 90+15-2+2x+5x=180 \\ 103+7x=180 \\ 7x=180-103 \\ 7x=77 \\ x=11 \end{gathered}`