Solve using Cramer's Rule.Two different gasohol mixtures are available. One contains 5% alcohol and the other 12% alcohol. How much of each should be mixed to obtain 1000 gallons of gasohol containing 10% alcohol?
A. 417 gal 5%, 583 gal 12%
B. 50 gal 5%, 120 gal 12%
C. 714 gal 5%, 714 gal 12%
D. 286 gal 5%, 714 gal 12%
Answer: D
Mathematics
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Convert the measurement as indicated. Round to the nearest tenth, if necessary.31 cm to inches
A. 78.7 in. B. 12.1 in. C. 3.1 in. D. 9.3 in.
Mathematics
Write the whole number in standard form.3000 + 70 + 4
A. 374 B. 347 C. 3740 D. 3074
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Solve the problem.The odds of rolling two dice and the sum being greater than 9 are 
What is the probability that the sum of two rolled dice is less than or equal to 9?
A. 
B. 
C. 
D. 
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Simplify.
+ 
A. 
B. 
C. 
D. 
Mathematics