Suppose that a chemist is mixing 2 acid solutions, one of 15% concentration and the other of 25% concentration. which of the following combinations cannot be combined? is it 17%, 20%, 23% or 29%?

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.

Solutions for 2x+7 less than or equal to 3x-5

Is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis.