Solve the problem.A contractor mixes concrete from bags of pre-mix for small jobs. How many bags with 8% cement should he mix with 3 bags of 20% cement to produce a mix containing 12% cement?
A. 14 bags
B. 8 bags
C. 6 bags
D. 9 bags
Answer: C
Mathematics
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Find the angle between the given vectors to the nearest tenth of a degree.u = i + 
j, v = -i - 2j
A. 132.7° B. 174.1° C. 161.6° D. 120.9°
Mathematics
Solve the equation.
- 
= 
A. 2, -2 B. no solution C. 2 D. -2
Mathematics
Provide an appropriate response.What is the major difference between solving quadratic equations and linear equations?
What will be an ideal response?
Mathematics
Determine the slope and the y-intercept. Then graph the equation.y = - 
x + 5
A. slope: - 
; y-intercept: (0, 5)
B. slope: 
; y-intercept: (0, -5)
C. slope: 
; y-intercept: (0, 5)
D. slope: - 
; y-intercept: (0, -5)
Mathematics