Solve the problem by writing and using a system of linear equations.Find the amount of a 12% saline solution a lab assistant should add to 60 cc (cubic centimeters) of a 22% in order to have 15% solution.
A. 190 cc
B. 40 cc
C. 140 cc
D. 10 cc
Answer: C
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Solve the problem.The map shows the states New Mexico, Oklahoma, Texas, Arkansas, and Louisiana. Find a route that starts in Texas and crosses each common state border exactly one time.
A. No such route exists. B. TX ? NM ? OK ? AR ? LA ? TX C. TX ? LA ? AR ? TX ? OK ? AR ? TX ? NM ? OK D. TX ? LA ? AR ? TX ? OK ? NM ? TX
Write in standard notation.1.0949 × 10-7
A. -109,490,000 B. 0.000000010949 C. 0.00000010949 D. 0.0000010949
The general term of a sequence is given. Find the indicated partial sum.a1 = 4, an = an - 1 + 6 for n ? 2; S5
A. 80 B. 100 C. 85 D. 55
Perform the operation indicated.(-7m2 + 8m - 6) - (-5m2 - 5m - 10)
A. 2m2 - 13m - 4 B. 12m2 - 3m + 16 C. -2m2 + 13m + 4 D. -12m2 + 3m - 16