Commercial gasoline is 10% ethanol and 90% gasoline. E-85 is 85% ethanol and 15%
gasoline.
How much commercial gasoline needs to be combined with 3800 gallons of pure 100% ethanol to create a mix that is 85% ethanol & 15% gasoline?

Select the margin of error that corresponds to the sample mean that corresponds to each population: a population mean of 360, a standard deviation of 4, and a margin of error of 2.5%

Solve the equation by completing the square. x^2+2x=17

The triangle shown has a hypotenuse with a length of 13 feet. the measure of angle a is 20 degrees. and the measure of angle b is 70 degrees. which of the following is closest to the length, in feet, of line segment ac? no need to use a calculator to find the trig numbers. each function is listed below. 4.4 5 12.2 35.7