the sum of a number and 4 times a second number is 13. when the second number is subtracted from the first number, the difference is 3. find the two numbers

you download 2 DVDs and 10 songs for $18. your friend downloaded 3 DVDs and 15 songs for $27. write a system of linear equations that represents this situation. can you determine the price of each DVD and each song? explain.

Solve the Integral of 1 / (1-y2)

Is it a zero slope when the zero is the numerator of a fraction? Ex:0/29

Mrs Williams has 30 students in her class 12 of her students are boys what percent of Mrs Williams students are boys

Bert was selling books at school. The first week he sold 3 more than two times the numbers of books he sold the second week. During the two week period he sold 18 books. How many books did he sale the first week of the fundraiser?

Solve 12: (-2) x 3 - (-2)

Which would prove that ΔABC ~ ΔXYZ? Select two options.

15/16 days is 1/16 groups of what size

If 40% of a radioactive substance remains after 20 years, what is the half-life of the substance?

Which expression represents a quadratic expression in complete factored form? A. (x - 2) + (x+3) OB. (2x+4) (x+3) OC (x - 1) (3x - 9 OD. (x+4) (x-3)