How to count the number of sevens in the numbers from 1 to 10000000?

X/16-1/4=1/2 solve for x

molly was packing books in a box to send to a friend. the box cannot weigh more than 2kg. if each book has a mass of 200g, what is the maximum number of books she can send?

Why is the number of inches different from the number of feet?

It takes 4000 persons hours to complete a project. How many weeks will it take a team of 5 people to complete the project if each person works 8 hours a day, 5 days a week?

Which of the following equations is equivalent to y=2x? a. y = log2x b. x = log2y c. y = logx2

A newspaper reporter wants to know how popular the hobby of bird watching is in the city. He asked people at the local bird refuge if they watched birds as a hobby. Which of the following best explains whether the reporters data is valid or not?

I am very confused on how to figure out if y = 3/4x is proportional?

Alison wants to buy a mountain bike for $339.12. If she saves $28.26 each month, in how many months will she be able to buy the bike?

At 12 o'clock the temperature was 7°C. The temperature decreased by - 20°C. What is the new temperature?

Ashleys rentals charges $27.50 per hour to rent a surfboard and a wetsuit. Darlas surf shop charges $23.25 per hour to rent a surfboard plus $17 extra for a wetsuit.