A perfect cube is a number that is the cube of an integer. For example, 125 is a perfect cube since 125 = 5 × 5 × 5= . Some examples of perfect cubes are 1, 8, 27, 64, 125, 216, 343, ..
16 does not have a perfect cube, but does have a perfect square 4×4=16
Answer:
Step-by-step explanation:
So bascially decay means shrinks or shrivels. Growth means like growing, bigger, sort of like a happy plant :D.
To find if this is getting bigger or is shrinking, lets plug in something simple like 1 for the time(t). Sooo:
20,000*.88^1
Since its a 1 exponent it does nothing so:
20,000*.88
Now this is 17600 you can use calculator but if you do this in head like me all I did is multiply 88 by 2 which was simply since 8 times 2 is 16 so 160+16 is 176 then I added zeros:
y=17600
As we can see this is smaller than 20,000, so it is a decaying problem.
By what percent tho.
Well this is pretty easy to reconize once you understand where to find it.
When they talk about percentage, they mean how much it decreased by.
This is 100%-the multiplyied value.
In this case the multiplyed value is 0.88, sooo:
100%-88%=18%
So the percent amount that the value decreased by is 18%.
Hope this helps!
Answer:
x = 2
Step-by-step explanation:
6x - 5 = 13 – 3x
Add 3x to both sides
6x + 3x - 5 = 13 - 3x + 3x
9x - 5 = 13
Add 5 to both sides
9x - 5 + 5 = 13 + 5
9x = 13+5
9x = 18
Divide both sides by 9
9x/9 = 18/9
x = 2
I hope this was helpful, please rate as brainliest
Step-by-step explanation:
You could find a number that can be multiplied by 2 and a number for a that when you subtract from the number that you multiplied by 2 can give the result of 8.
Example:
a-2b=8: a=12-2•2=8
12-4=8