Find the product and simplify.
? 
A. 5x2
B. 5x
C. 
D. 
Answer: B
Mathematics
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Solve the problem.The formula r = 2
can be used to approximate the speed r, in miles per hour, of a car that has left a skid mark of length L, in feet. What was the speed of a car that left a skid mark of 165 feet?
A. 10
mph
B. 330 mph
C. 5
mph
D. 50
mph
Mathematics
Divide the real numbers. Write any improper fraction as a whole or mixed number where appropriate.
A. -8 B. -3.5 C. 8 D. 35
Mathematics
Find the value of the missing number.-28 + ? = 20
A. -48 B. 48 C. 8 D. -8
Mathematics
Solve the problem.Determine whether the ordered triple 
is a solution of the system of equations.9x + 6y + 9z = 56x + 3y - 3z = 14 x - y + 2z = -3
A. Yes B. No
Mathematics