If the following system of equations was written as a matrix equation in the form ax = c, and matrix a was expressed in the form: a= {a c} {b d}, find the value of a-b +c+d. 2x+8y=7 4x-2y=9 , i dont know which number would be which letters

Orly uses 2 cups of raisins for every 12 cups of trail mix she makes. how many cups of trail mix will she make if she uses 8 cups of raisins?

The probability that an adult possesses a credit card is .70. a researcher selects two adults at random. by assuming the independence, the probability that the first adult possesses a credit card and the second adult does not possess a credit card is:

What is the product? a-3/15a × 5/a-3