Answer:
20 gray squares
Step-by-step explanation:
Given
See attachment for squares
Required
Number of gray squares when white = 16
First, we calculate the equation that represents both squares.
<u>The white squares</u>
--- initial
-- difference between successive gray squares
So, the nth term is:
<u>The gray squares</u>
--- initial
-- difference between successive gray squares
So, the nth term is:
When the white squares is 16
--- Calculate n
To get the number of gray squares;
Substitute in
5^x+6^x+3
^ means the x should be up
For the first problem, when you see expression like that it just means to write it twice, then FOIL it.
(2x-6) (2x-6)
If you don't know what FOIL is let me know and I can further explain it!
This also applies for the second question!
-2n-2
-------- =13
3
-2n- 2/3=12
Add 2/3 to both sides
-2n+ -2/3+2/3=12+2/3
-2=38/3
Divide both sides by -2
38
-2n -----
----- = 3
-2 ----
-2
The answer will be -19/3
Hope this help!
