Solve. Write a mixed numeral for the answer.A road acceleration test measures the time in seconds required to go from 0 mph to 60 mph. The results for five cars were as follows: 6
sec, 7
sec, 8
sec, 6
sec, and 7
sec. What was the average time?
A. 7
sec
B. 7
sec
C. 7
sec
D. 7
sec
Answer: D
Mathematics
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Solve the problem.The sum of twice a number and 15 less than the number is the same as the difference between -23 and the number. What is the number?
A. -4 B. -2 C. -3 D. -1
Mathematics
Determine whether or not one or more pairs of twin primes exist between the pair of numbers given. If so, identify the twin primes.31 and 39
A. 35, 37 B. 31, 33 C. No D. 37, 39
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Find the derivative of the function.y = 
A. y ' = 
B. y ' = 
C. y ' = 
D. y ' = 
Mathematics
Completely factor the polynomial or state that the polynomial is prime.729x3 + 512
A. (9x + 8)(81x2 + 72x + 64) B. (9x + 8)(81x2 - 72x + 64) C. (9x - 8)(81x2 + 72x + 64) D. (729x - 8)(x2 + 72x + 64)
Mathematics