20x^4-39x^3-16x
Make sure to multiply all the terms by each other in the two parentheses
Answer:
1 hour and 30 minutes
Step-by-step explanation:
45 times 1.065=47.925 which would be $47.93... hope that helps
10x2 = 20
the building from the ladder is 20ft
Answer:
39.91 degrees.
Step-by-step explanation:
Formula
Sin(A)/a = Sin(B) / b
Givens
Solution
Sin(84)/31 = Sin(B)/20
20*Sin(84) / 31 = Sin(B)
Sin(B) = 0.6416
B = 39.91 degrees.
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This looks like it is right, but you should check. Let h be the height opposite angle A.
h/20 = sin(39.91)
h = 20*sin(39.91)
h = 12.83
31 has to be longer than that amount (which it is.) So there is one solution.
