In a certain chemical, the ratio of zinc to copper is 4 to 13. A jar of the chemical contains 403 grams of copper. How many grams of zinc does it contain?

Sundar used linear combination to solve the system of equations shown. he did so by multiplying the first equation by 5 and the second equation by another number to eliminate the y-terms. what number did sundar multiply the second equation by? 2x+9y=41 3x+5y=36

If the simple annual interest rate on a loan is 6, what is the interest rate in percentage per month?

50 points~ ! i have to turn this in tomarrow