You can think in reverse. Addition is the opposite of subtraction. So to solve 15-8, you can ask "8 plus what number is equal to 15?" and note how 8+7 = 15. So that's why 15-8 = 7. Similarly, 15-7 = 8 can be solved the same way.
Answer:
there is a 2/6 chance because there are 2 odd numbers and being spun twice.
Step-by-step explanation:
Graphically, you have to go UP 1 slot (the y axis). You go up because the 1 in 1/5 is positive. If it were negative, it would go DOWN 1 slot. Then, you go to the RIGHT 5 slots because the 5 is positive. If it were negative, you would go to the left. Hope that helps!
If f(x)=69-15x then 
Given :
Lets find out 
. The steps to find out f inverse are
Replace f(x) by y
Now we find 
Replace inverse function in the place of x in f(x)
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Answer:
$340
Step-by-step explanation:
The pool is 5 yards wide by 10 yards long, so adding the deck will make the total area 7 yards wide by 12 yards long, or ...
(7 yd)·(12 yd) = 84 yd^2
The pool itself is ...
(5 yd)·(10 yd) = 50 yd^2
so the area of the deck is ...
84 yd^2 -50 yd^2 = 34 yd^2
Wood for each of those square yards costs $10, so the total cost is ...
($10/yd^2)·(34 yd^2) = $340
