Simplify the expression. Assume all variables represent positive real numbers.
+ 1 - 
A. 
+ 1 - 
B. 5
C. 5 - 2
D. 5 - 
Answer: D
Mathematics
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Use cross products to determine whether the pair of fractions is equivalent.
and 
A. equivalent B. not equivalent
Mathematics
Simplify the expression by combining like terms.-2(-2y + 8) - (7y + 7) - 6y + 15
A. 9y + 15 B. -9y + 24 C. 5y + 6 D. -9y - 8
Mathematics
Decide whether the expression has been simplified correctly.x4 ? x2 = x6
A. Simplified correctly B. Not simplified correctly
Mathematics
Solve the problem.A line from the top of a cliff to the ground passes just over the top of a pole 9.0 ft high and meets the ground at a point 8.0 ft from the base of the pole. If the point is 69 ft from the base of the cliff, how high is the cliff? Round to the nearest unit.
A. 8 ft B. 4968 ft C. 621 ft D. 78 ft
Mathematics