Use Cramer's rule to solve the linear system. If D = 0, use another method to determine the solution set.6x + 9y = 18-3x + 7y = -9
A. {(2, 1)}
B. {(3, 1)}
C. {(3, 0)}
D. Cramer's rule does not apply since D = 0; ?
Answer: C
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Add the given vectors by using the trigonometric functions and the Pythagorean theorem.A = 30, ? = 322 °B = 25, ? = 210 °
A. R = 31, ? = 274° B. R = 31, ? = 94° C. R = 31, ? = 356° D. R = 5, ? = 274°
Perform the indicated operation.F(x) = x3 - 9x - 25, G(x) = 3x3 + x2 + 6x + 15; Find (F + G)(x).
A. 4x3 + x2 - 15x - 40 B. 3x3 + x2 - 3x - 10 C. 4x3 + x2 - 3x - 10 D. 4x3 - x2 - 3x + 10
Find the linear function that is the best fit for the given data. Round decimal values to the nearest hundredth, if necessary.
A. y = 0.73x + 4.98 B. y = 0.63x + 4.88 C. y = 0.43x + 4.98 D. y = 0.53x + 4.88
Use the product rule and positive exponents to simplify the expression.3a7 ? 4a-3
A. 12a10 B. 12a4 C. 12a21 D. 7a4