19 times what makes 138

A chemist plans to mix 10 liters of a 40% acid solution with some 70% to obtain a 50% solution. How much of the 70% solution should be used?

A paper has an area of 546 square centimeters. What is the papers area in square inches

X^2+14=9x A) x = 2, x = 7 B) x = 3, x = 5 C) x = - 2, x = - 7 D) x = - 3, x = - 5

How do you find he decimal in a mixed number?

Which statements describe the function f (x) = 3 (1/3) x?

A rectangular plot of farmland will be bounded on one side by a river and on the other three sides by a single-strand electric fence. With 1800 m of wire at your disposal, what is the largest area you can enclose, and what are its dimensions?

If 1 inch = 2.54 centimeters how many inches is equal to 254 centimeters

What is the least common multiple you should use to find 4/5 + 5/6

What does 2 times the quantity x plus 6 look like in an equation

Recall that a test is statistically significant at a particular significance level if the null hypothesis is rejected.