Answer:
Option 1, 2 and 4
Step-by-step explanation:
3x-4y-8= 12
3x-4y= 12+8 (bring constants to 1 side)
3x-4y= 20 (simplify)
For a point to be a solution of the above equation, substitute the x and y coordinates into 3x-4y and see if it equals to 20.
Option 1: (0, -5)
3(0)-4(-5)= 20
This is correct
2) (4, -2)
3(4)-4(-2)=20
This is correct
3) (8,2)
3(8)-4(2)= 16
This is incorrect.
4) (-16, -17)
3(-16)-4(-17)= 20
This is correct.
5) (-1, -8)
3(-1)-4(-8)= 29
This is incorrect.
6) (-40, -34)
3(-40)-4(-34)= 16
This is incorrect.
Answer:
![= 2.403 * 10^{-3}](https://tex.z-dn.net/?f=%3D%202.403%20%2A%2010%5E%7B-3%7D)
Step-by-step explanation:
Given
![0.002403](https://tex.z-dn.net/?f=0.002403)
Required
Express as scientific notation
The rule of scientific notation is that:
It is represented in form of:
where ![1 \le a \le 10](https://tex.z-dn.net/?f=1%20%5Cle%20a%20%5Cle%2010)
will be represented as: a = 2.403; notice that the point was shifted forward by 3 units.
So:
n = -3
The equation becomes:
![a * 10^n](https://tex.z-dn.net/?f=a%20%2A%2010%5En)
![= 2.403 * 10^{-3}](https://tex.z-dn.net/?f=%3D%202.403%20%2A%2010%5E%7B-3%7D)
Approximate
![= 2.4 * 10^{-3}](https://tex.z-dn.net/?f=%3D%202.4%20%2A%2010%5E%7B-3%7D)
Answer:
3rd Choice
Step-by-step explanation:
The answer rounded to the nearest whole number is 88