Solve the system of equations.
A. (-7, -6), (-6, -7)
B. (-7, 6), (-6, 7)
C. (7, -6), (6, -7)
D. (7, 6), (-6, -7)
Answer: D
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Solve for R1:
R1 ð R2 RT = ÄÄÄÄÄÄÄ R1 + R2 a. RT - R2 R1 = ÄÄÄÄÄÄÄ RT + R2 b. RT ð R2 R1 = ÄÄÄÄÄÄÄ RT + R2 c. -RT ð R2 R1 = ÄÄÄÄÄÄÄÄ RT - R2 d. R2 + RT R2 = ÄÄÄÄÄÄÄ RT - R2 e. RT + R2 R1 = ÄÄÄÄÄÄÄ R1 ð R2
Solve the problem. Round rates to the nearest tenth of a percent and dollar amounts to the nearest dollar when necessary.An office supply store sells a computer disk for $87.95. If the cost is $60.67, find the percent of markup on cost and the equivalent percent of markup on selling price.
A. 69%, 145% B. 45%, 69% C. 45%, 31% D. 69%, 31%
Use substitution to factor the polynomial.15x4 + 26x2 + 8
A. (5x2 - 2)(3x2 - 4) B. (15x2 + 4)(x2 + 2) C. (3x2 + 4)(5x2 + 2) D. (3x2 + 1)(5x2 + 8)
Factor when possible. If the polynomial is prime, say so.x2 - x - 6
A. (x + 1)(x - 6) B. (x + 3)(x - 2) C. (x + 2)(x - 3) D. prime