How many gallons of gasoline that is 8% ethanol must be added to 2,000 gallons of gasoline with no ethanol to get a mixture that is 6% ethanol?

How many gallons of gasoline that is 8% ethanol must be added to 2,000 gallons of gasoline with no ethanol to get a mixture that is 6% ethanol?

The dimension of a rectangular plot is (7p+4q) and (2q+8p) units respectively.Find the area of the plot when p=2 and q=1.

How much money should you invest now at an annual interest rate of 2.5% compounded monthly if you want $45,000, 20 years in the future? We have to use the formula F=P(1+i)^n...

a. bn = 2n + 3 b. dn = (-1)n • n2

Two small pitchers and one large pitcher can hold 8 cups of water. One large pitcher minus one small pitcher constitutes 2 cups of water. How many cups of water can each pitcher hold? ...

The owners of a marina bought 6 canoes to be used as rentals at a cost of $650 per canoe. They borrowed 80% of the total cost for 8 months at 7 1/2% interest. Find the amount due using simple interest...

Please find roots of 9 x squared minus 155 x minus 500 is equal to zero

I am a 7th grader who is studying for a academic pentathlon competition that is on march.

Write and solve a system of equations for the following situation.

Convert 25 miles per hour to feet per second. (1 mile = 5280 feet and 1 hour = 3600 seconds)

Write as an equation: The sides of a rectangle are x and (x−4). The perimeter is 87.

The total cost of gasoline varies directly with the number of gallons purchased. Kathy pays $17.93 for 11 gallons of gasoline. Which equation shows the relationship between the total cost of gasoline,...

im not exactly sure how to set up an equation for this. i'm not sure where to put x and how to write the equation.

In your own words, explain why the method of dividing complex numbers works. What property justifies this process?

What is the answer? Algebra

A=lw

I don't remember how to lay out the equation to this word problem.

I don't know it I need help ASAP

|6y-3|+8=35 Solve for y

When you swim with the current, you can swim 20 miles in two hours. However, when you swim against the current it takes you four hours. How fast is the current running and how fast could you swim...