There are 10 students in a class. The teacher chooses 2 students to go to the library. The order in which they are chosen does not matter. How many ways are there to choose the students?

Eric must pay off a loan of $3,500 in 5 years. Use the appropriate formula to find the amortization payment he would need to make each six months, at 12% interest compounded semiannually

Jenny has $250 in her savings account. She plans on saving $15 per week from her job. Claire has only $200 in her account and can save $20 per week. How many weeks will it take before the amount in each savings account is the same?

Scores on the mathematics part of the SAT exam in a recent year were roughly Normal with mean 455 and standard deviation 120. You choose an SRS of 100 students and average their SAT math scores.

Given the following equation, explain which statement is correct 67 + 33 = 70 + 30 A the equation is true because the sum of 67 and 33 is equivalent to the sum of 70 and 30.

A certain magical substance that is used to make solid magical spheres costs $700 per cubic foot. The power of a magical sphere depends on its surface area, and a magical sphere can be sold for $50 per square foot of surface area.

Which number is between 6 1/8 and the square root of 64?

Find an equation for the nth term of the arithmetic sequence. - 17, - 14, - 11, - 8, ...

9879-6796 this is what it says on my job application it says to show your work as well

A patient taking a blood pressure medication is not responding to therapy. The physician increases the blood pressure medication from 300 mg a day to 650 mg a day.

On Saturday, Kelly borrowed $15 from her sister. The next day, she paid back $4. On Tuesday, she borrowed $9 more. How much money does Kelly now owe her sister?