Simplify the radical expression. Assume that all variables represent positive real numbers.
A. 7xy
B. 7xy
C. 3xy
D. 7xy
Answer: D
Mathematics
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Simplify. If the answer is not a real number, state so. Assume all variables represent non-negative real numbers.
A. not a real number B. 2.828 C. 1.414 D. -2
Mathematics
Translate the sentence to an equation using x as the variable. Do not solve the equation.A number increased by seven is negative fourteen.
A. x + 7 = -14 B. x - 7 = -14 C. 7 - x = -14 D. x - 14 = 7
Mathematics
Solve the equation.
x = 5 + 
x
A. {75} B. {150} C. {-75} D. {-150}
Mathematics
Solve the problem.An ascending weather balloon starts taking air samples at a height of 33,000 feet and every 1500 feet thereafter. What is its height when it takes the 9th sample?
A. 43,500 ft B. 45,000 ft C. 48,000 ft D. 46,500 ft
Mathematics