Solve the problem.One maid can clean the house in 3 hours. Another maid can do the job in 8 hours. How long will it take them to do the job working together?
A. 
hr
B. 
hr
C. 
hr
D. 
hr
Answer: C
Mathematics
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Write a quadratic equation having the given numbers as solutions. - 
, - 
A. 2x2 + 
x + 7 = 0
B. 2x2 - 25x + 35 = 0
C. 2x2 - 
x + 7 = 0
D. 2x2 + 35x - 25 = 0
Mathematics
The question(s) that follow refer to the problem of finding the minimum spanning tree for the weighted network shown below.
Using Kruskal's algorithm, which edge should we choose third?
A. EG B. BG C. EF D. AG E. none of these
Mathematics
Graph the solution set of the system of inequalities or indicate that the system has no solution.-x + 7y < -28x ? 3
A. 
B. 
C. 
D. 
Mathematics
Find the product and simplify.
? 
A. - 
B. -z
C. 1
D. z
Mathematics