The measures of the angles of △rst are given by the expressions in the table. angle measure r 31° s (x + 4)∘ t (3x + 9)∘ find the value of x. then find the m∠s and m∠t. enter your answers in the boxes. x = __ m∠s= __ º m∠t= __ º

The measure of angle S is and the measure of angle T is and this can be determined by using the property of sum of interior angles.

Given :

Apply the property of the sum of the interior angles of the triangle in order to determine the angles R, S, and T.

31 + (x + 4) + (3x + 9) = 180

Simplify the above equation in order to determine the value of 'x'.

4x + 13 = 149

4x = 136

Now, the measure of angle S is:

For more information, refer to the link given below:

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step-by-step explanation: