Answer:
x = 100°
Explanation:
The polygon has 6 sides, meaning it's a hexagon. In the picture you can see the following steps under #1:
(6-2) x 180° = 4 x 180 = 720°
720 is the total amount that all the angles should add up to, including the missing number x.
To solve for x add all of the angles up:
120 + 156 + 145 + (x + 9) + x + 90 = 720
520 + 2x = 720 (subtract 520 from both sides)
-520
2x = 200 (divide 200 by 2 to have x on its own)
x = 100°
To make sure it's correct, plug in the value (100°) for x in the original equation to check the answer:
120 + 156 + 145 + 100 + 9 + 100 + 90 = 720
720 = 720 Correct
X=4 Y=3 I hope this helped I don’t know if it is fully right
Answer:
(a) 
(b) 
(c) Fail to reject 
Step-by-step explanation:
Given
Solving (a): The test statistic
This is calculated as:
So, we have:
--- approximated
Solving (b): Range of p value
First, calculate the degree of freedom (df)
Using:
--- significance level
The p value at: is:
and the range is:
Solving (c): The conclusion
Compare the p value to the level of significance value
We have:
By comparison:
because:
<em>Hence, the conclusion is: fail to reject </em><em></em>
Answer:
Its not that hard think harder 9
Answer:
the average rate of change is 4.
Step-by-step explanation:
Find the average rate of change of f(x)=x^2 on the interval [1,3].
The average rate of change of f(x) on the interval [a,b] is f(b)−f(a)/b−a.
We have that a=1, b=3, f(x)=x^2.
Thus, f(b)−f(a)/b−a=((3))^2−(((1))^2)/3−(1) = 4.
