I need help and this is the 3rd time I am asking you can have extra points for the othe ones

steps below

Step-by-step explanation:

a,b in 2nd quadrant: sine is positive and cosine is negative

sin a = 3/4      cos a = -√7/4

cos b = -12/13    sin b = 5/12

sin(a+b) = sin a cos b + cos a sin b

             = 3/4*(-12/13) + (-√7/4)*(5/12)

             = - 9/13 - (5√7/48)

             = -0.9679

cos(a-b) = cos a cos b + sin a sin b   (can you try yourself?)

answer: the answer is 30 miles per hour.

ft/s -> mphmph = ft/s 1.466667mph = 44 divided by 1.466667mph = 30.00000

- r3ktforgood ☕

the factors of 24 are 1, 2, 3, 4, 6, 8, 12 and 24. hope this ! mark brainliest! you v much! : )