Solve the equation.(2x + 3)1/2 - (x + 1)1/2 = 1
A. {3}
B. {-3, -1}
C. ?
D. {3, -1}
Answer: D
Mathematics
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Completely factor the polynomial or state that the polynomial is prime.4x3 + 12x2 - 40x
A. 4x(x + 2)(x - 5) B. (x - 2)(4x2 + 20) C. (4x2 + 8x)(x - 5) D. 4x(x - 2)(x + 5)
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
Use the given information to find the exact value of the trigonometric expression.tan ? = 
; The terminal side of ? lies in Quadrant III.
Find sin 2?.
A. - 
B. - 
C. 
D. 
Mathematics
Solve the problem.An appliance store had monthly sales of $106,400 and spent 2% of it on freight costs. How much was spent on freight costs?
A. $5,320,000 B. $532,000 C. $2,128 D. $21,280
Mathematics