Quest? es matemáticas 4) 3a- 4b ( 4 - 7a + 2b ) + b 6) 3mn ( m? + n? - m + 4n - 5 ) 8) ( x + ? 5 )? 9) ( 4x + 2y )? 10) (2w-1,6)? 13) (x+11)(x+18) 15) (x+4,7)(x+3,25) considere x=-4, y=48 e z=2,7 17) 2x-y+3z 18) xz+1,57 20) x? +2x? -4x

Eight people were asked what the balance of their savings account at the beginning of the month was and how much it increased or decreased by the end of the month. create a scatter plot that represents the data that is shown in the table. the x-axis represents the beginning balance in thousands of dollars and the y-axis represents the change in the savings account in hundreds of dollars. name beginning balance (in thousands of dollars) change in savings account (in hundreds of dollars) jimmy 5 3 kendra 4 7 carlos 5 4 yolanda 3 1 shawn 2 5 laura 3 2 andy 5 6 georgia 4 3

Three coins are flipped. what is the probability that there will be at least two tails?

1. a parachutist is 800 feet above the ground when she opens her parachute. she then falls at a constant rate of 5 feet per second. select the equation that represents this situation. h = -800t + 5 y = -5x + 800 h = 5t - 800 y = 800x + 5 i need