cramer''s rule, Solve the following simultaneous equations by using Cramer...

Solve the following simultaneous equations by using Cramer's rule                      3x+2y=13                      2x-y=4

Interval notation, I can find what x means I just cant do the interval nota...

I can find what x means I just cant do the interval notation correctly

Pre algebra, A=8 AND R=2 THEN WHAT IS A+R-10

A=8 AND R=2 THEN WHAT IS A+R-10

Addition, -9+x=5

-9+x=5

Math, how do you do scientific notation

how do you do scientific notation

Matrix, given a matrix "A" determine the matrix represented by -5A

given a matrix "A" determine the matrix represented by -5A

Present value of annuity, The Fritzes are buying a house that sells for $18...

The Fritzes are buying a house that sells for $185,000. The bank is requiring a minimum down payment of 15% for a 30-year mortgage at 5.2% interest. Find (a) the amount of the down

Vertical angles,

Polynomials, please help me understand polynomials- i get the small problem...

please help me understand polynomials- i get the small problems but i dont understand larger ones

Permutations, How many ways can five people line up if two of them cannot s...

How many ways can five people line up if two of them cannot sit together?