Solve the system of equations by determinants.x + 4y = 116x + y = 4
A. x = - 
, y = 
B. x = - 
, y = - 
C. x = 
, y = - 
D. x = 
, y = 
Answer: D
Mathematics
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Use the order of operations to evaluate each problem.0 ÷ 3 + 6 ? 2
A. 15 B. 18 C. undefined D. 12
Mathematics
Solve the problem.Use each of the numbers 17, 18, 19, 20, and 21 once and only once to fill in the circles so that the sum of the numbers in the three horizontal circles equals the sum of the numbers in the three vertical circles. 
Which numbers can be placed in the middle of the horizontal row?
A. 17, 18, and 19 B. 18, 19, and 20 C. 17, 19, and 21 D. 19, 20, and 21
Mathematics
Find the value of the variable that satisfies the equation.-9x + 6 = 5 + 4x
A. x = - 13
B. x = - 
C. x = 
D. x = 13
Mathematics
Find the reference angle for the given angle.-383°
A. 23° B. 67° C. 113° D. 157°
Mathematics