Factor the four-term polynomial by grouping.2xy - 6x + 7y - 21
A. (2x + y)(7y - 3)
B. (2x + 7y)(y - 3)
C. (2x - 3)(y + 7)
D. (2x + 7)(y - 3)
Answer: D
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Solve.A partial map of a state in a road atlas covers a square area of 16,900 square miles. What is the length of each side of the square area?
A. 13 mi B. 169 mi C. 130 mi D. 4225 mi
Solve the triangle. Round lengths to the nearest tenth and angle measures to the nearest degree.a = 8, b = 5, c = 4
A. A = 125°, B = 24°, C = 31° B. A = 125°, B = 31°, C = 24° C. A = 31°, B = 125°, C = 24° D. A = 31°, B = 24°, C = 125°
Determine the coefficient and the degree of each term in the polynomial.9x4 - 5x + 3
A. Coefficients: 9, -5, 3; degrees: 4, 1, 0 B. Coefficients: 9, 5, -3; degrees: 4, 1, 0 C. Coefficients: 4, 1, 0; degrees: 9, -5, 3 D. Coefficients: 4, 1, 0; degrees: 9, 5, -3
Evaluate the expression  figure 1.png)
and write the result in the form a + bi.
(a) 4 + 5i (b) 4 - 5i (c) - 5 - 4i (d) 5 + 4i (e) none of these