Tyson began solving the system {4x+2y=64x+5y=15 by writing - 3y=-9.

Which property justifies this step?

division property of equality

multiplication property of equality

substitution property of equality

subtraction property of equality

Find a polynomial, which, when added to the polynomial 5x^2-3x-9, is equivalent to x^2-5x+6

Find the new amount. 15 liters decreased by 60%

1. Khianna and her sister went to the movies. Below is what they spent at each location. Tickets = $15.68 Popcorn and Drinks = $12.31 Video Games = $7.25 Khianna calculated that they spent $35.24 at the movies

A line that includes (0,6) has a slip of ten what is its equation in slop intercept form

Max clean 12 pools in 8 hours and d earns $270. how munch time does it take to clean 6 pools

What is the value of k in the product of powers below? 10 Superscript negative 3 Baseline times 10 times 10 Superscript k Baseline = 10 Superscript negative 3 Baseline = StartFraction 1 Over 10 cubed EndFraction

There are 15 marbles in a bag. 7 are red, the rest are a variety of colors. You want the chance of getting red to be at least 50%. How many red do you need to add?

Write 450 miles per 18 gallons as a unit rate (miles per gallon)

If 15 hats cost $120 and all the hats all cost the same amount, what is the price of each hat?

Questions 6 to 10 are related. based on a random sample of n=15 observations, we have obtained a sample mean of x (bar) = 1050. the goal is to test: h (0) : μ≤1000 and h (a) : μ>1000 assume that x is normally distributed with σ=150.