The answers should be 1, 1, 0, 0
Answer:
Step-by-step explanation:
plug the value of y
Add the numbers: 12 and 7
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5x^2+4x-2 This is a second degree polynomial since the largest exponent is x^2
Suppose that this person drives at r mph going to the mountains, and gets there in 12 hours. Returning, this person drives at (r+20) mph and gets home in 8 hours. We don't know the distance yet, but can solve for the initial speed, r, by setting
d = 12r = (r+20)(8). Solving for r, r=40 mph (going) and (40+20)mph = 60 mph (returning. Since d=12 r, d = (12 hrs)(40 mph) = 480 miles (answer).
Answer:
62.83185
Step-by-step explanation:
C=2πr=2·π·10≈62.83185
