How many solutions does the following system have? -4x + 5y = 7

4x - 5y = -7

a. one solution
b. no solution
c. infinitely many solutions

The ratio of wooden bats to metal bats in the baseball coach’s bag is 2 to 1. if there are 20 wooden bats, how many metal bats are in the bag?

Aefg - almn. find the ratio of aefg to almn. a)1: 4 b)1: 2 c)2.1 d)4: 1

Acircle has a circumference of 7.850 units. what is its radius?