Solve the system of equations using substitution.
A. x = 0, y = 2; x = , y =
or ,
B. x = 0, y = -2; x = - , y =
or ,
C. x = 0, y = -2; x = , y =
or ,
D. x = 0, y = 2; x = - , y =
or ,
Answer: D
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Perform the operation by applying the standard order of operations for a series of calculations.240 ÷ 5 - 2
A. 46 B. 233 C. 80 D. 237
Find an approximation of the area of the region R under the graph of the function f on the interval [a, b]. Use n subintervals and choose the representative points as indicated. Please round your answer to two decimal places.
?
;
;
; midpoints
?
A. 182.27 sq units
B. 308.77 sq units
C. 562.61 sq units
D. 416.79 sq units
E. 385.87 sq units
Find an equation of variation in which y varies inversely as x and the following is true.y = 24, when x = 3
A. y =
B. y =
C. y =
D. y = 8x
Calculate.23.75 ÷ 2
A. 10.2 B. 9.59 C. 9.3 D. 9.5