Answer: I dont understand what your saying im sorry, I'd really like to help but I cant :(
Answer:
23.2%
Step-by-step explanation:
First we need to find how many half lives 135 years is:
135 ÷ 64 = 2.109375
Now we divide 100% by 2 to the power of the number of half lives. This is how you calculate the percentage of the original amount left. If you have the original mass, you can substitute that in instead of 100%:
100 ÷ 
= 23.1747390635
To 1 decimal place it is 23.2%
Answer:
So there are 8 red and 5 brown M&M
Step-by-step explanation:
Let X is red M&M
Let Y is brown M&M
We know that:
- 3 more red M&Ms than brown <=> X = Y +3
- A bowl contains 13 red and brown M&Ms <=> X + Y = 13
substitute X into the second equation: (Y + 3) + Y = 13
<=> 2Y = 10
<=> Y =5
=> X = 5 + 3 = 8
So there are 8 red and 5 brown M&M
Answer:
8
Step-by-step explanation:
i did that answer and i got it right
The area of rectangular is A= length x width
120 feet of fancing = ---------------------------------- (the above line)
!-----------------------------------------!
! !
x ! the enclosed area ! x
! !
!---------------------------------------- !
120 -(x+x)
so the area is A = (120-2x) (x)= 120x-2x²
