What do the following two equations represent?

-2x+2y = 5

-10x+10y = 25

A. Equal lines

B. Parallel lines

C. Perpendicular lines

D. None of the above

Factor the expression m^2-3mn-28n^2

A bag contains 3 pennies, 2 nickels, 1 dime, and 1 quarter. Jason will draw one coin from the bag. How many type of coins are in the bag?

Solve the equation: 16+5x-4=7x+12-2x

Emily is 50 years old. Colin is 18 years older than Emily. Dan is 6 years younger than Emily. What is the total of their combined ages?

It takes Patty one-third of an hour to wash a car and half that time to dry off a car. How long will it take her to wash and dry 6 cars?

What is 0.0009999 closest to? 0, 1/2, or 1

A sum of scalar multiples of two or more vectors (such as c 1 Bold u plus c 2 Bold v plus c 3 Bold wc1u+c2v+c3w , where c Subscript ici are scalars) is called a linear combination of the vectors.

50) The first year Beth worked she earned n. The second year she earned 500 more than twice what she made the first year. The third year she earned 500 less than twice what she made the second year.

What is the sum of x + y when x = - 2.7 and y = 5.2? A. -7.9 B. -2.5 C. 2.5 D. 7.9

Which graph shows a negative correlation? 10Ty 9+ 8+ CON + 1 2 + 3 + 4 + 5 + 6 + 7 8 9 000