Perform the indicated operation. Assume that variables represent positive numbers.6
+ 
- 4
A. 2
B. 2
C. 3
D. 3
Answer: C
Mathematics
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Solve the equation.-7k2 - 20 = -48
A. {±4} B. {2} C. {-24} D. {±2}
Mathematics
Write the first six terms of the arithmetic sequence with the first term, a1, and common difference, d.a1 = 7.8, d = -0.75
A. 7.05, 6.3, 5.55, 4.8, 4.05, 3.3 B. -0.75, 7.05, 14.85, 22.65, 30.45, 38.25 C. 7.8, 7.05, 6.3, 5.55, 4.8, 4.05 D. 7.05, 14.85, 22.65, 30.45, 38.25, 46.05
Mathematics
Solve the equation by factoring.3x2 + 10x = 10(x + 30)
A. {-100, 100} B. {100} C. {-10, 10} D. {10}
Mathematics
In last year's math class, the class average was 78 and the class size was 176 students. The standard deviation was 7. What was the grade distribution?
What will be an ideal response?
Mathematics