Luara is 5 years older than her sister Elisabeth. She figured out that in 4 years she will be two times older than Elisabeth. How old are they now?

Find the greatest common factor 4a^2x^2 + 4a^2x + 4a^2

2. Prove that a 3x3 matrix must have at least one real eigenvalue. Is it important, as part of the proof, to find this eigenvalue? Why or why not?

Chris tells Adam that the decimal value of - 1 over 13 is not a repeating decimal. Is Chris correct?

What is 8x8x8x7x7= using write with exponents

Mortgage needs $480 to buy a TV and stereo system for his room. He received $60 in each for birthday presents. He plans to save $30 per week from his part-time job. The equation model for his situation is 60 + 30w=480.

Factor completley x2-4x-12

6-x=15 what is x? I am trouble finding it

What is the quotient of 55 divided by 5?

With a starting amount of $975, interest rate of 5.5% after 3 years?

The product of a number and 7 is not less than 21