Solve the problem.The ratio of the lengths of strings that play the notes D and B is 27 to 16. If a string 32 cm long plays a B, what is the length of the string that plays a D?
A. 54 cm
B. 48 cm
C. 59 cm
D. 32 cm
Answer: A
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Convert the units as shown. 20
cu yd = ____ cu ft
A. 0.765 B. 558 C. 0.641 D. 549
Solve the inequality, then graph the solution.3x + 6 - 4x < 6 - 3x + 4
A. (8, ?)
B. (-?, 2)
C. (-?, 8)
D. (2, ?)
Write an expression to state the problem and simplify.An investor buys 90 shares of stock for d dollars per share. The next day two other investors each buy the same number of shares, but the price has risen by $5 per share. How much have the three investors spent?
A. 90d + 90(d + 5); 180d + 450 dollars B. 90d + 2 ? 90d + 10; 270d + 10 dollars C. 90d + 2 ? 90(d + 5); 270d + 900 dollars D. Cannot be solved
Use an inverse matrix to find the solution to the system.
A. no solution B. x1 = 1, x2 = 4, x3 = 0, x4 = 1 C. x1 = 1, x2 = 3, x3 = 6, x4 = -3 D. x1 = 2, x2 = 2, x3 = -5, x4 = -6