Okay so the first one is 3 dollars each..because if you subtract 9 from 21 you will be left with 12 dollars so if he spent the money on FOUR tickets it would be 3 because 3 times 4 is 12 :)
Answer:
19) 0.8000
20) 0.8824
21) 0.2800
22) 1.8750
23) 0.8000
24) 0.8000
Step-by-step explanation:
sin = opp/hyp
cos = adj/hyp
tan = opp/adj
19) sin Z = 40/50 = 0.8
20) sin C = 30/34 = 0.882352941
21) sin A = 7/25 = 0.28
22) tan X = 30/16 = 1.875
23) cos X = 28/35 = 0.8
24) cos C = 36/45 = 0.8
Answer:
Step-by-step explanation:
I will ASSUME you mean y = 3x² at x = 2
The derivative of an equation is the slope the curve at any given point
y' = 6x
so our line slope at x = 2 is 6(2) = 12
at x = 2, y = 3(2²) = 12
so (2, 12) is a point on the line (the point of tangency)
plugging into our slope equation
y = 12x + b
12 = 12(2) + b
b = -12
So the equation of the line tangent to y = 3x² at x = 2 is
y = 12x - 12
