Fill in the blank.The opposite of 30 = 
.
A. - 
B. 0
C. 30
D. -30
Answer: D
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A pitching machine throws 70% strikes and 30% balls. Five pitches will be thrown by the machine.What is the probability that the first three balls thrown by the machine will be balls and that the last two thrown will be strikes?
A. 0.2 B. 0.3 × 0.7 C. 0.33 × 0.72 D. 3 × 0.3 + 2 × 0.7 E. none of these
Translate the situation into mathematical language. You need not actually solve the problem.Find two consecutive integers such that 3 times the first plus 7 times the second is 107.
A. Let h be the first integer; 7h(3(h + 1)) = 107 B. Let h be the first integer; 3h + 7(h + 1) = 107 C. Let h be the first integer; 7h + 3(h + 1) = 107 D. Let h be the first integer; 3h - 7(h + 1) = 107
Verify the identity.cos 4x = 2 cos2 2x - 1
What will be an ideal response?
Decide whether the expression has been simplified correctly.
5 = 
A. Simplified correctly B. Not simplified correctly