Evaluate the integral.
4-8 (ln 12 - ln 8)
Mathematics
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Solve the system for x and y. Show your answer as an ordered pair, (x, y).-7x - 7y = 42-4x + 2y = 12
A. Infinite solutions B. (-5, -1) C. (-4, -1) D. (-4, -2)
Mathematics
Solve the problem.Mary and her brother John collect foreign coins. Mary has four times the number of coins that John has. Together they have 150 foreign coins. Find how many coins Mary has.
A. 24 coins B. 30 coins C. 114 coins D. 120 coins
Mathematics
Solve the exponential equation. Express the solution set in terms of natural logarithms.4x+4 = 52x+5
A. 
B. 
C. {7 ln 5 - 5 ln 4}
D. {ln 5 - ln 4}
Mathematics
Use a double-angle formula to rewrite the expression. ? 10 cos2 x - 5 ?
A. 5 cos x B. ?cos 5x C. ?10 cos 2x D. ?10 cos x E. ?5 cos 2x
Mathematics