This is the commutative property of addition. It basically says, x+y=y+x.
To answer your question, 103+21=21+103
Answer:
53.12
Step-by-step explanation:
You can do it 2 ways
1st way
83 multiplied by .33
83 is the amount and .33 is the percent
Now you have the mark downed price, so you subtract that from the original of 83
2nd way
subtract 33 from 100 because the price is 33% off
now multiply 83 by 0.64 because the .64 represents 64%
If you graph y=7x-9 and y=3x-1 the two lines will intersect at one point. That is how you graphically "solve" the system of equations.
Both of these lines are of the form y=mx+b where m is the slope and b is the y-intercept.
So for y=7x-9, the slope is 7 and the y-intercept is -9
For y=3x-1, the slope is 3 and the y-intercept is -1
....
The solution for this system occurs when both coordinates are equal to each other so we can say:
7x-9=3x-1 subtract 3x from both sides
4x-9=-1 add 9 to both sides
4x=8 divide both sides by 4
x=2, making y=3x-1 become:
y=3(2)-1=6-1=5, so the solution to the system of equations is:
(2,5)
I'm guessing the power series given is
which you can condense somewhat into
You should recognize this as a geometric series, which converges for
World population would be: 8,333,078,316
