Find the rational number halfway between the two given rational numbers.
, 
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Find the mean of the set of data.11, 13, 7, 12, 2
A. 10 B. 11.25 C. 46 D. 9
Mathematics
Solve.A square has an area of 49 square inches. If the same amount is added to the length and removed from the width, the resulting rectangle has an area of 45 square inches. Find the dimensions of the rectangle.
A. 3 in. by 4 in. B. 5 in. by 9 in. C. 5 in. by 10 in. D. 4 in. by 9 in.
Mathematics
Write the expression with only positive exponents and evaluate if possible. Assume all variables represent nonzero real numbers.
A. 24y(y + 4)
B. 
C. 
D. 
Mathematics
Solve the problem.For what numbers x, 0 ? x ? 2?, does cos x = -1?
A. ?
B. 
C. 
, 
D. none
Mathematics