Answer:
60(a+b) means that you would have to distribute
While 60a+ 60b is already in it's simplest form
Basically just do the problem backwards.
72÷9=8
72÷8=9
Answer:
t=-19/7
Step-by-step explanation:
you need to isolate for t which means you need to get t all alone on one side of the equation. Do do that you can divide both sides by 7. This gives you -19/7=7t/7
we know that anything divided by itself is 1 so we get -19/7=t
This is the simplest for because 19 and 7 are both prime numbers, so you can't simplify them.
Each time x goes up by 1, y also goes up by 1 as well.
slope = rise/run = 1/1 = 1
Or we can use the slope formula to get
m = (y2-y1)/(x2-x1) = (3-2)/(2-1) = 1/1 = 1
I used the first two rows as the points to plug into the slope formula.
You can pick any two rows you want and you'll get the same slope value.
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Because we get the same result of 1 each time, this means the rate of change is <u>constant</u> and this function is <u>linear</u>. Plotting all four points will show a single straight line goes through all of them. See diagram below.
Ans: (640-80) divided by 2=280-cost of the pair of shoes
280+80=360-cost of the dress
check: 280+360=640