Solve the equation.0.13(70) + 0.60x = 0.30(70 + x)
A. 50
B. 20
C. 30
D. 40
Answer: D
Mathematics
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Use the formula for the sum of the first n terms of a geometric sequence to evaluate the sum.
A. 820 B. -204 C. -500 D. -51
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Use the Trapezoidal Rule with n = 4 steps to estimate the integral.
A. - 
B. - 
C. -1 - 
D. - 
Mathematics
Add. -85 + 0
A. 85 B. -850 C. 0 D. -85
Mathematics
Use least common multiple or greatest common divisor to solve the problem.Planets A, B, and C orbit a certain star once every 3, 5, and 18 months, respectively. If the three planets are now in the same straight line, what is the smallest number of months that must pass before they line up again?
A. 26 months B. 90 months C. 270 months D. 54 months
Mathematics