15. Explain the importance of an unbiased sample.

Beth took out a $20,000 loan for college she is borrowing money from two banks. bank a charges an interest rate of 8.5% bank b charges and interest rate of 10.5% after one year alice owes $1860 in interest how much money did she borrow from bank a

Asystem of equations has 1 solution.if 4x-y=5 is one of the equations , which could be the other equation ?

What is the absolute value of the complex number -4-sqrt2i