Roger is riding in a bike-a-thon to raise money for his favorite charity. The total distance of the bike-a-thon is 38.7 miles. So far he has completed 1/10 of the bike-a-thon. How many miles has Roger biked?
A. 387 miles
B. 38.7 miles
C. 3.87 miles
D. 0.387

Which sum or difference identity would you use to verify that cos (180° - q) = -cos q? a.) sin (a -b) = sin a cos b – cos a sin b b.) cos (a -b) = cos a cos b – sin a sin b c.) cos (a -b) = cos a cosb + sin a sin b d.) sin (a + b) = sin a cos b + cos a sin b

Proving the parallelogram diagonal theoremgiven abcd is a parralelogam, diagnals ac and bd intersect at eprove ae is conruent to ce and be is congruent to de

Which best explains why this triangle is or is not a right triangle ?