Rule: The sum of any integer and its opposite is equal to zero. Adding two positive integers always yields a positive sum; adding two negative integers always yields a negative sum. To find the sum of a positive and a negative integer, take the absolute value of each integer and then subtract these values.
One of the best ways to understand something in math is to watch videos of people explaining it on youtube. Here are a coulle videos, hopefully one of them helps :)
https://youtu.be/AA6RfgP-AHU
https://youtu.be/JDmglbduKvE
Answer:
y = 2x
Step-by-step explanation:
By inspection, we can see the line crossing through the points: (0,0) , (1,2)
[Use the slope formula to find m]
m = (Y2 - Y1) / (X2 - X1)
m = (2 - 0) / (1 - 0)
m = 2/1 = 2
[Use the point slope formula to find equation]
(y-y0) = m(x-x0)
y - 0 = 2(x - 0)
y = 2x
Answer:
The mean of the distribution = 76.05
The standard deviation of this distribution = 5.159
Step-by-step explanation:
Given:
The true proportion of voters in the county who support a new fire district is =0.65
sample size n=117.
Solution:
<u>The mean of the distribution:</u>
The mean of the distribution is given by n * p
where
n= sample size
p= probability of success on an individual trial.
Substituting the values , we get
Mean=117 *0.65
Mean=76.05
<u>Standard deviation of this distribution:</u>