While driving on the highway, fiona averages 60 miles per hour. in the city, she averages 30 miles per hour. on a trip to her grandmother's house, fiona drives 312 hours on the highway and 112 hours in the city. what is fiona's average speed for the entire trip to her grandmother's house? i dont know the answer

The blue whale is the largest animal living on the earth. the average blue whale measures 100 feet long (30 meters) and weighs 300,000 pounds (136,000 kilograms). a whale’s head is 1⁄3 of the length of its body. a new baby whale is 1⁄4 the length of a grown whale. the average man is 1⁄17 the length of a blue whale, and 1⁄1,818 its weight. a human baby measures 1⁄4 of the length of an adult. calculate the following information: how long is a whale’s head? how long is a new baby whale? how tall is the average man? how much does the average man weigh? how tall is the average human baby?

What point is the projection of q on a) r b) s c) t

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.