Solve the problem.The speed of a vehicle is inversely proportional to the time it takes to travel a fixed distance. If a vehicle travels a fixed distance at 10 miles per hour in 15 minutes, how fast must it travel to cover the same distance in 30 minutes?
A. 20 miles per hour
B. 45 miles per hour
C. 5 miles per hour
D. 
miles per hour
Answer: C
Mathematics
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Solve the differential equation.y' + y = y2
A. 1 - Ce-x
B. 1 + Cex
C. 
D. 
Mathematics
Solve the problem.Given that 
= 184, use the properties of determinants to evaluate 
.
A. -184 B. 1 C. 0 D. 184
Mathematics
Solve the equation for x.
?
?
A. 
B. ?
C. ?
D. ?
E. ?
Mathematics
Solve the problem.A population of birds in a small county can be modeled by the polynomial 
where x = 1 corresponds to July 1, x = 2 to July 2, and so on. For what days does f estimate the population to be 8550?
A. July 11th B. July 13th C. July 14th D. July 12th
Mathematics