Write a system of equations for the problem, and then solve the system.Two different gasohol mixtures are available. One contains 5% alcohol and the other 12% alcohol. How much of each should be mixed to obtain 1500 gallons of gasohol containing 10% alcohol?Gallons of GasoholPercent (as decimal)Gallons of Pure Gasoholx0.05?y0.12?1500?0.10?
A. 1071 gal 5%, 1071 gal 12%
B. 429 gal 5%, 1071 gal 12%
C. 625 gal 5%, 875 gal 12%
D. 75 gal 5%, 180 gal 12%
Answer: B
Mathematics
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Solve the initial value problem.
= 
+ x, x > 0; y(3) = 2
A. y = - 
+ 
- 
B. y = 
+ 
- 
C. y = 
+ 
D. y = - 
+ 
Mathematics
Construct a truth table for the statement.~[p ? (~q)]
A. 
| T | T | T |
| T | F | F |
| F | T | F |
| F | F | F |
B.
| T | T | F |
| T | F | F |
| F | T | F |
| F | F | T |
C.
| T | T | T |
| T | F | F |
| F | T | F |
| F | F | T |
D.
| T | T | F |
| T | F | T |
| F | T | T |
| F | F | F |
Mathematics
Add.3 + 8.23
A. 12.24 B. 11.23 C. 11.33 D. 5.23
Mathematics
Factor using the ac-method.4x4 + 12x2 + 9
A. (2x2 - 3)(2x2 - 3) B. (2x2 + 1)(2x2 + 9) C. (4x2 + 3)(x2 + 3) D. (2x2 + 3)(2x2 + 3)
Mathematics