Solve by substitution and check.x + 2y = -4 y = 3
A. (2, -3)
B. (3, -10)
C. (2, 3)
D. (-10, 3)
Answer: D
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Solve the system. If there is an unlimited number of solutions, find one of them.2x + 6y + 8z = 126x + 3y + 4z = -21x + y + z = -6
A. x = 3, y = 1, z = -6 B. x = -6, y = 3, z = 1 C. Unlimited: x = -6, y = 1, z = 3 D. Inconsistent
Answer the question(s) based on the following situation: Over the last 80 years records have been kept of the annual rainfall in the Tasmanian desert. The distribution of annual rainfall is approximately normal and has no outliers. The minimum of 2.5 inches of rain occurred in 1959; the maximum of 9.7 inches of rain occurred in 1938.The standard deviation of the rainfall distribution is approximately
A. 2.7 inches. B. 1.2 inches. C. 1.8 inches. D. 3.6 inches. E. none of these
To construct the square ABCD with the diagonal 
as shown, begin by constructing the perpendicular-bisector of .
Answer the following statement true (T) or false (F)
Write the answer to the problem as an algebraic expression.Two numbers have a sum of 52. One of the numbers is s. Find the other number.
A. s + 52 B. s - 52 C. 52 - s D. 52 + s