Given f(x)=4x2+19x−5 and g(x)=4x2−x .

What is (fg)(x) ?

xx+5 where x≠0, 5
−19x+5x where x≠0, 14
x+5x where x≠0, 14
−x19x−5 where x≠0, 519

THE RIGHT ANSWER IS THE
x+5x where x≠0, 14
I TOOK THE TEST

explanation:

step-by-step explanation:

answer: cos [   arcsin (3/5) - arccos (1/2) ] =

step-by-step explanation: × = 3/5 = 0.6--> x = 36.87 and x = 180 - 36.87 = 143.13 deg

cos y = 1/2 --> y = +- 60 deg a. cos (x - y) = cos (143.13 - 60) = cos 83,13  

=

0.12

b. cos (36.87 - 60) = cos (-23.23) = 0.92

i think the answer is 90 hope this