2 diffrent ways up and down n side by side
Answer:
42
Step-by-step explanation:
because 15 by 42 = 630
Answer:
True
Step-by-step explanation:
Margin of error of a confidence interval:
The margin of error of a confidence interval has the following format:
![M = z\frac{s}{\sqrt{n}}](https://tex.z-dn.net/?f=M%20%3D%20z%5Cfrac%7Bs%7D%7B%5Csqrt%7Bn%7D%7D)
In which z is related to the confidence level(the higher the confidence level the higher z is), s is related to the standard deviation and n is the size of the sample.
A higher confidence level leads to a larger margin of error, that is, a wider interval. The interval expands around it's lower and upper bounds, which means that if a value is part of a lower confidence interval(such as 95%), it will be part of the higher(such as 99%), and the answer to this question is true.
Answer:
<h2>x = 9</h2>
Step-by-step explanation:
![x^2-36=5x\qquad\text{subtract}\ 5x\ \text{from bot sides}\\\\x^2-5x-36=0\\\\x^2+4x-9x-36=0\qquad\text{distribute}\\\\x(x+4)-9(x+4)=0\\\\(x+4)(x-9)=0\iff x+4=0\ \vee\ x-9=0\\\\x+4=0\qquad\text{subtract 4 from both sides}\\\\x=-40](https://tex.z-dn.net/?f=x%5E2-36%3D5x%5Cqquad%5Ctext%7Bsubtract%7D%5C%205x%5C%20%5Ctext%7Bfrom%20bot%20sides%7D%5C%5C%5C%5Cx%5E2-5x-36%3D0%5C%5C%5C%5Cx%5E2%2B4x-9x-36%3D0%5Cqquad%5Ctext%7Bdistribute%7D%5C%5C%5C%5Cx%28x%2B4%29-9%28x%2B4%29%3D0%5C%5C%5C%5C%28x%2B4%29%28x-9%29%3D0%5Ciff%20x%2B4%3D0%5C%20%5Cvee%5C%20x-9%3D0%5C%5C%5C%5Cx%2B4%3D0%5Cqquad%5Ctext%7Bsubtract%204%20from%20both%20sides%7D%5C%5C%5C%5Cx%3D-4%3C0%5C%5C%5C%5Cx-9%3D0%5Cqquad%5Ctext%7Badd%209%20to%20both%20sides%7D%5C%5C%5C%5Cx%3D9%3E0)
Step-by-step explanation:
Sum of interior angle for a polygon = (n-2)180
It has 6 sides
=(6-2)180
=4*180
=720
Therefore, let the unknown interior angle =x
x+162+115+120+148+85=720
x+630=720
x=720-630
x=90^