Suppose that (x,7/25) is a point in Quadrant II lying on the unit circle. Find x. Write the exact value, not a decimal approximation.

Achemist has 200 ml of a 10% sucrose solution. she adds x ml of a 40% sucrose solution. the percent concentration, y, of the final mixture is given by the rational function: the chemist needs the concentration of the final mixture to be 30%. how many milliliters of the 40% solution should she add to the 10% solution to get this concentration?

What is the slope simplify your answer and write it as a proper fraction, improper fraction, or integer

How do i do this activity, is appreciated