Solve.The difference of four times a number and seven times the same number is 9. Find the number.
A. -4
B. 4
C. 3
D. -3
Answer: D
Mathematics
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Solve and graph.-20r + 12 ? -4(4r - 2)
A. (-?, 1]
B. (1, ?)
C. (-?, 1)
D. [1, ?)
Mathematics
Calculate the arc length of the indicated portion of the curve r(t).r(t) = (10 - 2t)i + (2 + 9t)j + (6t - 2)k, 5 ? t ? 9
A. 1694 B. 154 C. 44 D. 484
Mathematics
Factor completely.24x2 - 150
A. 6(2x + 5)2 B. (12x - 30)(2x + 5) C. (2x - 5)(12x + 30) D. 6(2x - 5)(2x + 5)
Mathematics
Solve.Find the value of L if P = 22 and W = 6 in the formula P = 2L + 2W.
A. 16 B. 8 C. 5 D. 11
Mathematics