Answer: 370,000
Step-by-step explanation:
Answer:
1024
Step-by-step explanation:
There are 4 bacteria at the start. We can make an equation to represent the phenomena explained in the question.
As it is written in the question that the bacteria culture doubles in every hour.
So,
Let t represent the unit of time
So the number of bacteria after t unit of time will be
Number of bacteria after t unit of time=4*2^t
We have to calculate number of bacteria after 8 hours, so t = 8
Number of bacteria after 8 hours=4*2^8
=4*256
=1024
So the bacteria after 8 hours in the culture will be 1024..
Answer:
a +2b
Step-by-step explanation:
2(a + 2b) - a - 2b
Distribute
2a +4b -a -2b
Combine like terms
2a -a + 4b-2b
a +2b
Answer:
x = 80
Step-by-step explanation:
Total = 360
90 + 50 + 90 + 50 = 280
360 -280 = 80
![\text{Like terms are } \frac{2}{5}y \text{ and } -0.2y](https://tex.z-dn.net/?f=%5Ctext%7BLike%20terms%20are%20%7D%20%5Cfrac%7B2%7D%7B5%7Dy%20%5Ctext%7B%20and%20%7D%20-0.2y)
<em><u>Solution:</u></em>
<em><u>Given that the expression is:</u></em>
![\frac{2}{5}y + \frac{1}{5}x -0.2y-6+(-2)](https://tex.z-dn.net/?f=%5Cfrac%7B2%7D%7B5%7Dy%20%2B%20%5Cfrac%7B1%7D%7B5%7Dx%20-0.2y-6%2B%28-2%29)
We have to select the like terms
"Like terms" means that terms that has same variables with same exponent and same ( or different ) coefficients
In the given expression, y is a variable
Two terms has y as variable : ![\frac{2}{5}y \text{ and } -0.2y](https://tex.z-dn.net/?f=%5Cfrac%7B2%7D%7B5%7Dy%20%5Ctext%7B%20and%20%7D%20-0.2y)
Here variable "y" is same in both terms and coefficients are different
"x" is also a variable in given expression. But there are no other terms with "x" as variable
So they form a like terms
![\frac{2}{5}y + \frac{1}{5}x -0.2y-6+(-2)\\\\\frac{2}{5}y - 0.2y + \frac{1}{5}x -6 + (-2)](https://tex.z-dn.net/?f=%5Cfrac%7B2%7D%7B5%7Dy%20%2B%20%5Cfrac%7B1%7D%7B5%7Dx%20-0.2y-6%2B%28-2%29%5C%5C%5C%5C%5Cfrac%7B2%7D%7B5%7Dy%20-%200.2y%20%2B%20%5Cfrac%7B1%7D%7B5%7Dx%20-6%20%2B%20%28-2%29)
Thus the like terms are : ![\frac{2}{5}y \text{ and } -0.2y](https://tex.z-dn.net/?f=%5Cfrac%7B2%7D%7B5%7Dy%20%5Ctext%7B%20and%20%7D%20-0.2y)