Solve the problem.June wants to work for 15
hours at her part-time job this week. She has already worked 6
hours. How many more hours does she need to work?
A. 7
hours
B. 8
hours
C. 8 hours
D. 9
hours
Answer: B
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Find the expected value.Four cards are numbered 1 through 4. Two of these cards are chosen at random without replacement and the numbers on them are multiplied. Find the expected value of this product.
A. 
B. 4
C. 6
D. 
Find the coordinates of the centroid (to the nearest 0.01 in.) of the uniform flat-plate machine part shown.
A. (2.34 in., 2.47 in.) B. (0.84 in., 2.38 in.) C. (1.03 in., 1.71 in.) D. (0.84 in., 1.71 in.)
Solve the equation.47x = 64
A. x = 
B. x = 
C. x = 64
D. x = 81
Provide an appropriate response.Explain why, when rewriting a fraction with a different denominator, the fraction can be multiplied by another fraction whose numerator and denominator are the same.
What will be an ideal response?