F(x) = 2x - 10 If you don't understand I left a picture:)
y= 2x - 10
x= 2y - 10
2y = x + 10 _1
y= 1/2x + 5 f (x) = 1/2x +5
Answer:
x=4
y=-1
Step-by-step explanation:
x + 2y = 2
-x + y = -5
3y = -3
y = -1
If you would then plug in -1 (for y) then you would get x=4
For example:
x + 2(-1) = 2
x - 2 = 2
x = 4
OR
-x - 1 = -5
-1 + 5 = x
4 = x
x = 4
108, you can find it by finding out how many rooms per day she can clean, which happens to be 12, and then multiply 12 and 9 to get 108
or you can set up a proportion if you know how to do that
Answer:
Debra’s rate is 3 Words Per Minute (WPM)
Explanation:
In order to find a rate, you need to put the unit (words) over the time (minutes):
27words/9minutes
You then have to simplify this expression:
3words/1minute
You can further simplify this to “3 words per minute” or “3 WPM”
Treat it like a fraction
18b^2/45b
divide top and bottom by b
18b/45
divide top and bottom by 3
6b/15
divide top and bottom by 3 again
2b/5
2b:5 is the simpliest form of the ratio