Solve the system of equations by substitution. x + 3y = 32x - 5y = -5
A. (1, 1)
B. (0, 1)
C. (0, 0)
D. (1, 0)
Answer: B
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Solve the problems.The speed of sound is approximately 1,088 feet per second in a particular medium. Calculate this speed in miles per hour. Round to the nearest tenth.
A. 731.8 mi./hr. B. 12.4 mi./hr. C. 744.8 mi./hr. D. 741.8 mi./hr.
Find all complex zeros of the polynomial function, and write the polynomial in completely factored form.f(x) = 2x4 - 5x3 + 20x2 - 45x + 18
A. f(x) = (2x + 1)(x + 2)(x + 3)(x - 3) B. f(x) = (2x + 1)(x + 2)(x + 3i)(x - 3i) C. f(x) = (2x - 1)(x - 2)(x + 3i)(x - 3i) D. f(x) = (2x - 1)(x - 2)(x + 3)(x - 3)
Multiply to find the exact answer. Express the answer as a whole or mixed number when possible and simplify.4 ? 5
A. 20
B. 20
C. 20
D. 21
Write the expression in lowest terms.
A. 
B. - 
C. 
D. 