Answer:
80
Step-by-step explanation:
Move the left triangle on top of the right triangle to get a perfectc renctangle of 3+7 by 8 with area 10*8
Two corresponding sides and two corresponding angles are congruent.
Answer:
89 miles per hour
Step-by-step explanation:
Answer:
13 °C
Step-by-step explanation:
You just ask yourself how you got from -6 to +7. So in other words, what plus -6 gets you 7. I know that 13-6=7. the aswer is 13°C.
hope this helps!!
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.