The mean height of 10 girls is 154cm. the mean height of 8 boys is 162cm. what is the mean height of the class?

What's the difference between: x≥0 and nonnegative integer. ?

If i have a 24 in loaf of bread and i cut it into two pieces one 9 in how long was the other

Draw a tape diagram to represent each situation.for some of the situations,you need to decide what to represent with a variable andre bakes 9 pans of brownies.he donates 7 pans to the school bake sale and keeps the rest to divide equally among his class of 30 students