Why does it pi appear in measurement formulas involving circles?

You know 1mi = 1,760 yd. How many yd is 10 mi?

What is the value of b2 - 4ac for the following equation? 2x 2 - 2x - 1 = 0

A boy wants to swim from one dock of a pond to another dock. About how far will he have to swim?

Maggie is participating in her school reading challenge. She reads 40 books in 6 months. If 26 of the books are fiction, what percent of the books that she read are non-fiction.

2. Find the surface area and volume of a storage cube measuring 5 feet on each side.

Sue has four DVD's and Terry has six DVD's. They put all their DVD's together and sold them for $10 for two DVD's. How much money will they earn if they sell all of their DVD's?

At the movie theatre, child admission is $5.70 and adult admission is $9.80 . On Thursday, twice as many adult tickets as child tickets were sold, for a total sales of $556.60 . How many child tickets were sold that day?

Tara has $2000 in her savings account David has 1/10 as much as Tarrant and his savings account how much does David have in his savings account

For the problem, use the discriminant to determine the number of real solutions for the equation. Then, find the solutions and check to see if they make sense in the context of the problem.

Follow the rule to find the next three numbers in pattern. describe the pattern using the terms even and odd. add 5: 1, 6, 11