Given sinx=-4/5 and x is in quadrant 3, what is the value of tanx/2

What is the value of n in the equation -1/2(2n+4)+6=-9+4(2n+1)

An isosceles trapezoid with a perimeter of 42 inches. each of the congruent non parallel sides is 5 inches long, and the trapezoid is 3 inches tall. how long are the two parallel sides? a. 10 in, 22 in b. 16 in, 16 in c. 10 in, 16 in d. 12 in, 20 in

You use technology ans find a sum of 6.712e-8. write this sum in standard form