Solve.Mary and her brother John collect foreign coins. Mary has twice the number of coins that John has. Together they have 105 foreign coins. Find how many coins Mary has.
A. 70 coins
B. 35 coins
C. 63 coins
D. 14 coins
Answer: A
Mathematics
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Evaluate the integral.Use the formula 
to evaluate the integral. 
A. x sin-1 x + 
+ C
B. x sin-1 x + 
+ C
C. x sin-1 x - 
+ C
D. x sin-1 x + x + C
Mathematics
Use elimination to solve each system of equations, if possible. Identify the system as consistent or inconsistent. If the system is consistent, state whether the equations are dependent or independent. 0.5x - 0.1y = -2.7-0.3x - 0.5y = 0.5
A. (-5, 2); consistent and independent B. (-1.7, 6.5); consistent and independent C. inconsistent D. (-5.6, 4.3); consistent and independent
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Evaluate. 72
A. 49 B. 64 C. 128 D. 14
Mathematics
Graph the decimal on a number line.-4.17
A. 
B. 
C. 
D. 
Mathematics