Find the value of x. The diagram is not to scale.

Given: RS¯¯¯¯¯¯¯≅ST¯¯¯¯¯¯¯, m∠RST =8x−60, m∠STU=10x

To find the value of x, we can set the measures of the angles equal to each other and solve for x.

Since RS¯¯¯¯¯¯¯≅ST¯¯¯¯¯¯¯, we can conclude that m∠RST = m∠STU.

Therefore, we have the equation:

8x - 60 = 10x

Subtracting 8x from both sides, we get:

-60 = 2x

Dividing both sides by 2, we get:

-30 = x

Thus, the value of x is -30.