Use the echelon method to solve the system of two equations in two unknowns.-7x + 5y = 14 3x + 3y = -6
A. (-2, 1)
B. (-3, 1)
C. (-2, 0)
D. No solution
Answer: C
Mathematics
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Find the center and the radius of the circle.x2 + y2 - 14x + 10y + 74 = 9
A. (-7, 5), r = 9 B. (7, -5), r = 3 C. (5, -7), r = 9 D. (-5, 7), r = 3
Mathematics
Use mathematical symbols to translate the phrase. Use x to represent the unknown number. If there are two unknown numbers, use x and y to represent the numbers.4 times a number
A. 4 - x
B. 4x
C. 
D. 4 + x
Mathematics
Determine whether the problem is an equation or an expression. 16 + 2
A. Expression B. Equation
Mathematics
Between each pair of numbers, insert the appropriate sign, <, =, or >, to make a true statement.1.6 1.75
A. 1.6 > 1.75 B. 1.6 = 1.75 C. 1.6 < 1.75
Mathematics