Solve.In how many ways can the letters in the word PAYMENT be arranged if the letters are taken 4 at a time?
A. 210
B. 420
C. 28
D. 840
Answer: D
Mathematics
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Solve the problem.The product of two consecutive odd integers is 99. Find all pairs of integers that satisfy this condition.
A. -11 and 9, -9 and 11 B. -11 and 11 C. -11 and 9 D. -11 and -9, 9 and 11
Mathematics
Solve the equation. 0.8x - 0.3(20 + x) = 0.45(20)
A. {15} B. {40} C. {20} D. {30}
Mathematics
The length (L) of a rectangle of fixed area varies inversely as the width (W). If the length of the rectangle is 8 ft when the width is 5 ft, find the length of the rectangle when the width is 4 ft.
Mathematics
Solve the system of equations by the elimination method.0.6x - 0.9y = 4.20.3x - 0.1y = -1.4
A. (-80, -100) B. (-10, -8) C. (-8, -10) D. (-0.8, -1)
Mathematics