A scientist wants a 45 milliliter saline solution with a concentration of 11%. She has concentrations of 7% and 19%. How much of each solution must she use to get the desired concentration?

Convert. Simplify your answer and write it as a proper fraction or as a whole or mixed number. x ounces = 7/8 of a pound

O quociente entre a soma de soma de dois numeros e um deles e igual a 3. O inverso do dobro da soma deles e igual a 1/6 quais sao os numeros?

A golf driving range charges a flat fee of $20 to practice and then $5.75 for a bucket of balls. Write an equation that models the charges (C) in terms of the number of bucket of balls (b) that you use.

What is 100 written as a power of ten

What is the perimeter of 14-gon

What does pythagorean theorem state?

A student gets paid to deliver newspapers after school. She earns 25$ a day, plus an extra $0.75 for each newspaper she delivers and $5 for each new customer she signs up for delivery.

What is the answer to three parentheses X + 5 equals 18

35% as a fraction in simplest form

14-2 (3p+1) = 6 (4+p) what is the solution