What is the simplified form of x plus 2 over x squared minus 3x minus 10 ⋅ x minus 3 over x squared plus x minus 12 ? (6 points) A:1 over the quantity x minus 3 times the quantity x plus 4 B: 1 over the quantity x minus 3 times the quantity x plus 2 C: 1 over the quantity x plus 4 times the quantity x minus 5 D:1 over the quantity x plus 2 times the quantity x minus 5

Step-by-step explanation:

What is the simplified form of x plus 2 over x squared minus 3x minus 10 ⋅ x minus 3 over x squared plus x minus 12 ? (6 points) A:1 over the quantity x minus 3 times the quantity x plus 4 B: 1 over the quantity x minus 3 times the quantity x plus 2 C: 1 over the quantity x plus 4 times the quantity x minus 5 D:1 over the quantity x plus 2 times the quantity x minus 5

step-by-step explanation: 2

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