How can we add without a caculator

If Tevin drives 210 miles at a constant speed of 60 mph. How long will it take? (Be sure to include units.)

What is the answer to 10=7-m

Order the numbers from least to greatest.-7/5 - 1 5/11 -1.45 91/200

A river is flowing at the rate of 2.4 miles per hour when a girl rows across it. If the girl rows at a still-water speed of 3.

Solve the system of equations. y = 7x - 9 y = 7x + 7 a. (-4, 1) c. (4, 1) b. (-4, - 1) d. No solution

Which of the following best describes the term definition

Diameter of the earth is 12756m in 1996 an new planet was discovered whose diameter is 5/86 of the diameter of the earth find the diameter of this planet in km

When it is best to solve using factoring and the Zero Product Property. Include at least one example of an equation that you would use this method to solve.

Find the slope for the following line:y=3/4*-7

My last question had something wrong with the typing, so im remaking the post Samuel has a collection of toy cars. His favorites are the 27 red ones which make up 60%, percent of his collection. How many toy cars does Samuel have?