Is the square root of 4 a rational number

3/4 of the students in a classroom are girls. If there are ten boys in the class, how many total students are there?

Jack runs 7 tenths of a kilometre further than Whitney. How far does Jack run

Melanie had 67 dollars to spend on 7 books. After buying them she had 11 dollars. How much did each book cost?

A meteorologist reports that the ratio of snowfall in January to total snowfall during the average winter is 2 to 5. If 34 inches have falled in January of the current year, find the predicted total snowfall for the entire winter.

What is (30 1/9 + 4 1/3) - 19 5/6

Suppose y varies directly with x, and y=30 when x=3. what direct variation equation relates x and y.

A poll of a random sample of1400 adults reported that respondents slept an average of 6.5 hours on weekdays and 7.

What is the answer for 10.3 (3) + 9.5 (4) = ? + 38.0

The table below follows the rule y=kx, where k is the constant of proportionality. What is the value of k? Table is: * over y 3 over 12 4 over 16 5 over 20 6 over 24 7 over 28

Each cone of the hourglass has a height of 15 millimeters. The total height of the sand within the top portion of the hourglass is 45 millimeters. The radius of both cylinder and cone is 6 millimeters.