The number 3.14 is a rounded value of the mathematical quantity π. If you replace 3.14 with π, what is the exact formula for the circumference in terms of the diameter, d, and in terms of the radius, r?

Which fraction is greater 5/8 or 7/10

Solve this system of equations algebraically using substitution y = x + 4 and x + y=2

Find the perimeter. A rectangle measuring 3cm by 12cm

What is the solution to the equation - 5 (s-30) = -10

What numbers divide 58 evenly

How many weeks will it take Justin to save $133 if he saves $9.50/wk? Derive a complete equation to model the problem. Use w to represent the unknown value.

An airline finds that 5% of the persons who make reservations on a certain flight do not show up for the flight.

20 hours put into degrees?

Which should be calculated first to solve this story problem? Marta has had a health club membership for 5 weeks. She goes to the health club 6 times a week. She exercises for 1.5 hours each visit. She spends 0.

An animal shelter houses only dogs and cats. The ratio of cats to dogs at the shelter is 11:9. What is the ratio of the number of dogs to the total number of animals at the shelter?