Select the correct answer. Which expression gives the area of triangle QRS?
S
15
11
20°
R
9
OA (11)(15)cos(20°)
O B. (9)(15)cos(20°)
OC. (11)(15)sin(20%)
OD. 319)(15)sin(209)

The number of possible solutions of a polynomial can be found by looking

Simplify 5 square root of 7 end root plus 12 square root of 6 end root minus 10 square root of 7 end root minus 5 square root of 6 . (1 point) 5 square root of 14 end root minus 7 square root of 12 5 square root of 7 end root minus 7 square root of 6 7 square root of 12 end root minus 5 square root of 14 7 square root of 6 end root minus 5 square root of 7

Two planes leave an airport at the same time, one flying east, the other flying west. the eastbound plane travels 20 mph slower. they are 1600 mi apart after 2 hr. find the speed of each plane.