2/3x - 1/2y = 3
1/2x + y = 5

which of the following systems is equivalent to the given system?

2x - y = 18 and x + 2y = 10
4x - 3y = 18 and x + 2y = 10
2x - 3y = 3 and x + 2y = 5

How far could you drive on 50 gallons of gas

Abag contains 3 red marbles, 2 blue marbles, and 2 green marbles. one marble is picked, then another marble. assume that the selections are made with replacement. a) find the probability of picking two red marbles with replacement. b) find the probability of picking a red marble and a blue marble. assume the selections are made without replacement. c) find the probability of picking two red marbles without replacement. d) find the probability of picking a red marble and a blue marble without replacement.

Two cities a and b are 1400km apart and lie on the same n-s line. the latitude of city a is 23 degrees. what is the latitude of city b. the radius of the earth is approximately 6400km.