Question

look at the diagram.
which equation can be used to solve for x?
solve for x.
x =

Explanation:

Step1: Solve the equation

We know that the equation \(9x + 90=180\) (assuming this is the correct equation from the problem setup, as the sum of angles around a right - angle related setup with \(4x\), \(5x\) and a \(90^{\circ}\) angle sums to \(180^{\circ}\)).
Subtract \(90\) from both sides:
\(9x+90 - 90=180 - 90\)
\(9x=90\)

Step2: Find the value of \(x\)

Divide both sides by \(9\):
\(x=\frac{90}{9}\)

Answer:

\(x = 10\)