How can the quotient of powers law be used to show that a negative exponent is equivalent to the reciprocal of the positive exponent?

Find the value of 1715⋅211.though these numbers aren't quite as nice as the ones from the example or the previous part, the procedure is the same, so this is really no more difficult. give the numerator followed by the denominator, separated by a comma.

Someone me what is the area of this figure? 18m 18m 8m 16m

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.