Answer:
h=2.2
Step-by-step explanation:
Answer:
it is 1/8 or 12.5%
it also can be seen as 8:1
Δ = 1 + 4*20 = 81
x' = (-1 + 9)/2 = 4
x'' = (-1 - 9)/2 = -5
4² + 4 - 20 = 0
(-5)² - 5 - 20 = 0
Ok !
9514 1404 393
Answer:
(4, -2)
Step-by-step explanation:
If (x, y) is part of the relation f, then (y, x) will be in the inverse relation f^-1.
The point contained in f^-1(x) is (4, -2).
_____
<em>Additional comment</em>
The range of f is {2, -4, -2, -4}, which has -4 repeated. That means <em>the inverse relation is not a function</em>. We can say that (4, -2) is a point contained in the inverse relation, but we cannot say that f^-1(x) is a function.
So, I'm not use to that type of currency, but I can still help you.
The equation would be:
145 + 60(d-1) = 445
Now since it is 60 per day after that, the first day would not be charge, the second would but you would not charge it more.
145 + 60d - 60 = 445
Add like terms
85 + 60d = 445
-85 -85
60d= 360
d= 6
You can even check using a table/ coordinates. x= days, y=money
(1, 145), (2, 205), (3, 265), (4, 325), (5, 385), (6, 445).
