Simplify the expression. Write your answer without negative exponents. Whenever an exponent is negative or zero, assume that the base is not zero.
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Solve the problem.The length of a rectangular storage room is 9 feet longer than its width. If the area of the room is 70 square feet, find its dimensions.
A. 4 ft by 13 ft B. 6 ft by 15 ft C. 5 ft by 14 ft D. 4 ft by 15 ft
Mathematics
Simplify the expression.(-39)4
A. Exponent: -4, base: 39 B. Exponent: 4, base: -39 C. Exponent: 4, base: 39 D. Exponent: -39, base: 4
Mathematics
Perform the indicated operations and simplify the result. Leave the answer in factored form.
+ 
A. 
B. 
C. 
D. 
Mathematics
Find the correlation coefficient.The following are costs of advertising (in thousands of dollars) and the number of products sold (in thousands): 
A. -0.3707 B. 0.6112 C. 0.6756 D. 0.2635
Mathematics