A random sample of 10 subjects have weights with a standard deviation of 13.3531 kg. What is the variance of their weights? Be sure to include the appropriate units with the result.

The ratios of boys to girls on a soccer league is 2: 5. if there are 28 boys, how many girls are playing soccer? extra points! will mark as brainiest asap

Fatima plans to spend at least $15 and at most $20 dollars on sketch pads and pencils. if she buys 2 sketchpads, how many pemcils can she buy while staying in her price range? fatima can buy between and pencils. ? (type whole numbers. use ascending? order.)

8litres of paint can cover 129.6 m². how much paint is required to paint an area of 243m²?