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?

How do you get the answer for 45 multiplied by 26/3

Type the algebraic equation for this statement. Let a represent the unknown number. Seven less than twice a number is negative one hundred forty-seven.

When alexis works overtime (any hours over 40 hours a week), she is paid 1.5 times her regular hourly rate. in one week, she worked 51 hours. if her regular hourly rate is $7.05, how much did she earn that week?

Which equation is not a linear equation? Question 7 options: a) -4v + 2w = 7 b) 2 x + 3 y = 5 2x + 3y = 5 {"version":"1.1","math":"2x + 3y = 5"} c) x = - 5 d) x 4 = y

If I had 8 cookies, and ate 2-5 of 3 cookies how much of the 3 cookies are eaten

A 11-story building has a glass-enclosed elevator that goes up and down the outer wall of the building. From 1 floor (s) below the topmost floor, you take the elevator and go down 5 floors. How many floors are you above the bottom floor?

Which measure is greater six feet or two meters

Factor this: y = - 4x²-4

Factor 6x^2+11x+4 ... ?

Where would water be placed, if at all, in this Venn diagram? A) on the acid side B) on the base side C) in the middle, within both D) it can't be placed accurately