How do u solve equations or system of equations?

Write x2 - 8x 13 = 0 in the form (x - a) 2 = b, where a and b are integers. (x - 4) 2 = 3 (x - 3) 2 = 2 (x - 2) 2 = 1 (x - 1) 2 = 4

Madeline is saving money to buy a sweater that costs $45. If she has saved 15% of the money she needs, how much more does she have to save?

You buy the same number of brushes, rollers, and paint cans. Write an expression in simplest form that represents the total amount of money you spend for painting supplies ... Brush cost $3.99, Paint cost $21.79 and Paint roller cost $6.89

Pre-Calculus Given vectors a = (-1,2) b = (-1,3) Find a+3b

Factor the polynomial 9x+45

Write the sum as a mixed number with the fractional part less than one 1 1/6 + 3 3/6

A cyclist rides 6.9 km east for 23 minutes, then he turns and heads west for 7 minutes and 2.1 km. finally, he rides east for 12.6 km, which takes 42 minutes.

The cranberry sauce recipe called for 2 1/6 cups of white sugar and 4 2/3 cups of brown sugar. How many sugar is required?

My rule is: y = 1/3x + 11/15 Find x, if y=1.

What is 1.96 billion in scientific notation?