Find the length of the unknown side of the right triangle. In each case, a and b represent the lengths of the legs and c represents the length of the hypotenuse.
a = 21, b = 72; find c
A. 3
B. 75
C. 5625
D. 4743
Answer: B
Mathematics
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Find the equation of the line. Write the equation using standard notation.Through (-4, -2); parallel to y = 8
A. x = -2 B. y = -2 C. y = -4 D. x = -4
Mathematics
Simplify the expression.(
+ 
)2
A. - 8 + 
+ 
+ 4
B. 23 + 4
C. 23
D. 8 + 4
Mathematics
Simplify the expression by removing as many factors as possible from under the radical. Assume that all variables represent positive real numbers.
? 
A. 10
B. -6
C. -10
D. 6
Mathematics
Solve the problem.The number of mosquitoes in a lake area after an insecticide spraying decreases at a rate of
mosquitoes per hour. If there were 14,000 mosquitoes initially, how many will there be after 3 hours?
A. M(3) ? 281,198 mosquitoes B. M(3) ? 14,000 mosquitoes C. M(3) ? 3124 mosquitoes D. M(3) ? 62,744 mosquitoes
Mathematics