Step-by-step explanation:
.3f+1 = .2f-4.5
1. Subtract .2f both sides
.1f+1 = -4.5
2. Subtract 1 from both sides
.1f = -5.5
3. Divide .1 both sides
f = -55
To check plug in -55 to all the f’s and both sides should be equal.
Hope this helps!
A variable is a letter that replaces an unknown number.
Answer:
Pythagoras
Step-by-step explanation:
Pythagoras
Answer:
Step-by-step explanation:
The sum you are trying to understand is this.
Remember that in general when you have a geometric series
you have that
and that equality is true as long as 
.
Therefore here we have
and 
Therefore we can use the formula and
All the points if they lay on top of eachother
if they arent on top of eachother, they can intersect at 2 points
