What is the area of △PQR. Enter your answer as a decimal in the box. Round only your final answer to the nearest tenth. cm² A scalene triangle P Q R. The base Q R is labeled as 14 centimeters. Side P R is labeled as 9 centimeters. Angle R is labeled as 20 degrees.

Evaluate the integral. (sec2(t) i t(t2 1)8 j t7 ln(t) k) dt

Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.

What is the next step in the given proof? choose the most logical approach. a. statement: m 1 + m 2 + 2(m 3) = 180° reason: angle addition b. statement: m 1 + m 3 = m 2 + m 3 reason: transitive property of equality c. statement: m 1 = m 2 reason: subtraction property of equality d. statement: m 1 + m 2 = m 2 + m 3 reason: substitution property of equality e. statement: 2(m 1) = m 2 + m 3 reason: substitution property of equality