Oh this is really easy.
So add 16+20 then find the square root. it equals 36 so the square root is 6
Hope that helped!
Answer:
Parallel lines
Step-by-step explanation:
From the definition of Parallel lines, which states that two lines are set to be parallel to each other if they do not intersect at any point in the plane.
Then,
Parallel lines is defined by distinct lines in the same plane which never intersect each other and have the same slope.
Hello!
To find how many calories in three cups we can use the proportion below.
To find our answer we can say, "How many times does 3/4 go into 3," and then multiply that number by 90 as shown below.
3÷3/4=4
90(4)=
360Just to verify, we will cross multiply and check our answer
90(3)÷3/4
270÷3/4=360
Therefore, our answer is
D) 360 calories.
I hope this helps!
Answer:
The 80% confidence interval would be given by (0.339;0.401)
Step-by-step explanation:
Previous concepts
A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".
The margin of error is the range of values below and above the sample statistic in a confidence interval.
Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".
Solution to the problem
For this case the estimated proportion of interest would be
In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 80% of confidence, our significance level would be given by and . And the critical value would be given by:
The confidence interval for the mean is given by the following formula:
If we replace the values obtained we got:
The 80% confidence interval would be given by (0.339;0.401)
They are similar and the scale factor is 8:4.8
because 8 / 4.8 = 2.5 / 1.5