Solve for x and y: x+y=5 x-y=a

Jorge's cell phone plan costs $20.00 each month plus $0.15 per minute. If his bill for the month is 58420, how many minutes did Jorge use? (Round to the nearest whole number). 10 64 428 561

One hundred 50 cent coins have a mass of 690g. What is the mass of one 50 cent coin?

You draw a card at random from a deck that contains 3 black cards and 7 red cards. What is P (draw a black card) ?

If the width of each of the model's propellers is 1.62 inches, how wide is an actual propeller

A one-variable linear equation can be solved using the method of graphing a related system of linear equations. Use the graph of the system below to solve the related one-variable linear equation. - 2x = - 4 A. x = 2 B. y = - 1 C. x = 0 D. (2, - 4)

In a family with 7 children, excluding multiple births, what is the probability of having exactly 2 girls? Assume that having a boy is as likely as having a girl at each birth.

A baseball player hit 65 home runs in a season. Of the 65 home runs, 19 went to right field, 23 went to right-center field, 9 went to center field, 11 went to left-center field, and 3 went to left field.

How many milliliters of olive oil (D=0.92 g/mL) have the same mass as 1.80 L of gasoline (D=.74 g/mL)

Leo's family keeps recyclables in a cylindrical trash can. Today Leo bought a larger can with a radius and height that are twice the radius and height of the old can. Leo claims the new and old cans are geometrically similar figures.

The value of Maggie's car decreased by 30% since last year, when she bought it. If the car is now worth $17,000.00, how much was the car worth when she bought it?