Find the m2. O a. m Q = 30 degrees
O b. mxQ = 60 degrees
O c. m Q = 70 degrees
O d. m2Q = 75 degrees

9514 1404 393

  d. m∠Q = 75 degrees

Step-by-step explanation:

The sum of the angles in a triangle is 180°. This triangle is marked to show it is an isosceles triangle, so the two base angles have the same measure.

  ∠P +∠Q +∠R = 180°

  x° +(2x +15)° +(2x +15)° = 180°

  5x = 150 . . . . . . . . . . . . . . . . . . . divide by °, subtract 30

  x = 30 . . . . . . . . . . . . . . . . divide by 5

  m∠Q = (2x +15)° = (2(30) +15)°

  m∠Q = 75°

a. the residual plot for model 1 has a random pattern and is a good fit for the data.