Solve the problem.If a roll of wallpaper costs $30, how much will 9 rolls cost?

A. $270
B. $272
C. $41
D. $39


Answer: A

Mathematics

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Provide an appropriate response.Suppose that A is an m × n matrix and B is a p × q matrix. Under what condition(s) can the product AB be found? Under what condition(s) can the product BA be found?

A. AB can be found if m = p; BA can be found if n = q. B. AB can be found if m = q and n = q; BA can be found under the same conditions. C. AB can be found if q = m; BA can be found if n = p. D. AB can be found if n = p; BA can be found if q = m.

Mathematics

Factor.64x2 + 48xy + 9y2

A. (8x + 3y)(8x - 3y) B. (8x + 3y)2 C. (8x - 3y)2 D. Prime

Mathematics

Solve the problem.A foul tip of a baseball is hit straight upward from a height of 4 feet with an initial velocity of  per second. The function  describes the ball's height above the ground, s(t), in feet, t seconds after it was hit. What is the instantaneous velocity of the ball 1.1 seconds after it was hit?

A. -35.2 feet per second B. -3.2 feet per second C. 3.2 feet per second D. 35.2 feet per second

Mathematics

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