Solve the system of equations by the substitution method.

A. {(-5, 8)}
B. {(8, 5)}
C. {(5, 8)}
D. ?


Answer: C

Mathematics

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Sketch a scatter plot of the data shown in the table.The table shows the lowest temperature on record y (in degrees Fahrenheit) in Duluth, Minnesota  for each month x where x = 1  represents from January. Months, x Temperature, y 1 -46 2 -36 3 -23 4 -7 5 14 6 25 7 31 8 42 9 24 10 3 11 -26 12 -15

A.

x: Months (1 ? January)

y: Temperature (in Fº)


B.

x: Months (1 ? January)

y: Temperature (in Fº)


C.

?

x: Months (1 ? January)

y: Temperature (in Fº)


D.  

?

x: Months (1 ? January)

y: Temperature (in Fº)


E.

x: Months (1 ? January)

y: Temperature (in Fº)


Mathematics

Find the slope of the line.

A. 0 B. 2 C. -2 D. Undefined

Mathematics

Factor out the greatest common factor.5x2 + 20x

A. 5x2(x + 4) B. x(5x + 20) C. 5x(x + 4) D. 5x(x + 20)

Mathematics

Solve triangle, if possible. Round angles an side lengths to the nearest tenth when necessary. 

A. C = 103°, a ? 10.8, b ? 19.1 B. C = 97°, a ? 10.6, b ? 18.8 C. C = 103°, a ? 53.3, b ? 30.1 D. C = 103°, a ? 19.1, b ? 10.8

Mathematics