How many gallons of a 90% antifreeze solution must be mixed with 100 gallons of 30% antifreeze to get a mixture that is 80% antifreeze?

What are the coordinates of D when quadrilateral is reflected across the line y = x

How do you solve 12x = 144

On my key-board what key will I use to type (x to the fourth power?) and also what keys do I use to set up a fraction?

Caroline measured the weight of a dog that came into the veterinary clinic. She determined that her measurement had a margin of error of 0.05 kilogram. Which of the following could be the measured weight of the dog? A. 27.939 kilograms B. 27.

Tim mows neighborhood lawns for extra money. Suppose that he would be willing to mow one lawn for $13 , a second lawn for $17 , and a third lawn for $24 . Also suppose that three neighbors are interested in having their lawns mowed. Mrs.

Multiply the following (4 - 2x) 2

A shopper buys a 12 - pound bag of oranges for $18.75. What is the unit price?

Harry kept a record of how far he ran each day last week Distance (in miles) Monday 4.5 Tuesday 3.9 Wednesday 4.25 Thursday 3.75 Friday 4.2 On which day did Harry run the greatest number of miles?

Matthew collects purple and red marbles. he has 320 marbles and 65% of them are purple. How many red marbles does he have?

Multiply the complex numbers. (5+1i) (-3+2i)