How much water should be added to 28 ml of 20% alcohol solution to reduce the concentration to 14%

The ratio of girls to boys in French class is 5:4. There are 12 boys in the class. How many girls are there?

A watermelon seed is 4mm long. How far would a line of 114 watermelon seeds stretch? Write your answer in meters.

Dariany is training for a race she ran 12.56 miles on one day and 12.98 miles on the second day and 13.04 miles on the third day how much farther did she run on the second day than the first?

Solve by using the quadratic formula x^2-14x+49=0

Write 6,000,370 in scientific notation.

A store buys a cell phone cover for the wholesale

What property shows that 2/5 x 1 = 40/100

NeNe tripled a cookie recipe for a party. The original recipe called for 4.25 cups of sugar. NeNe tripled the sugar amount and poured it into a mixing bowl. The mixing bowl got knocked over and 3.46 cups of sugar spilled.

Maya is on the swim team. Each day she swims 800 m. How many kilometers does she swim each day?

the price to mail letter at the post office is $0.49 for the first ounce and $0.21 for each additional ounce. amrit paid $1.96 to mail his letter. how much did the letter weight