Find the greatest common factor, GCF, of the expressions.88x2, 44x9
A. 88x2
B. 66x7
C. 22x7
D. 44x2
Answer: D
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Solve the problem.A tank initially contains 100 gal of brine in which 60 lb of salt are dissolved. A brine containing 4 lb/gal of salt runs into the tank at the rate of 8 gal/min. The mixture is kept uniform by stirring and flows out of the tank at the rate of 5 gal/min. Write, in standard form, the differential equation that models the mixing process.
A. 
+ 
y = 32
B. 
+ 
y = 20
C. 
= 32 - 
y
D. 
+ 
y = 32
Factor by grouping.15a3 + 10a2b + 18ab2 + 12b3
A. (5a2 + 6b2)(3a + 2b) B. (5a2 - 6b2)(3a - 2b) C. (15a2 + 6b2)(a + 2b) D. (5a2 + 6b)(3a + 2b)
Find the roots of the equations.
= 
A. 
B. - 
C. -8, 6
D. 
, - 
Simplify. Assume that all variables represent positive real numbers.
- 
A. (5x3y2 + 4x4y)
B. (5x6y4 - 4x9y)
C. (5x3y2 + 4x4y)
D. (5x3y2 - 4x4y)