Solve the problem.The velocity of a car is 78 cos t km/hr on the time interval [0, 2] hours. Calculate the distance the car traveled in that time interval.
A. 70.925 kilometers
B. 85.075 kilometers
C. 156 kilometers
D. 226.925 kilometers
Answer: A
Mathematics
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Find a positive value of the given variable so that the trinomial is factorable.7x2 + 9x + c; c = ?
A. 10 B. 3 C. 9 D. 2
Mathematics
Solve.A boat moves 7 kilometers upstream in the same amount of time it moves 18 kilometers downstream. If the rate of the current is 7 kilometers per hour, find the rate of the boat in still water.
A. 15
km/hr
B. 7 km/hr
C. 4
km/hr
D. 11
km/hr
Mathematics
Provide the proper response.Write a ratio equal to the rate of 85%.
What will be an ideal response?
Mathematics
Simplify the expression. Assume all variables represent positive real numbers.(
+ 
)(
- 
)
A. 4
B. 20
C. 12 - 8
D. 12 + 2
Mathematics