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Find the area of the shaded reg

Neporo4naja [7]

Answer:

C DJ DJ DJ DJ to Yoo to dh DJ SF at cb CJ Yoo op BN CNN DJ DJ DJ Yoo DJ DJ go

4 0

2 years ago

Name the intersection of AB and CD

Vlad1618 [11]

Answer:

two lines, AB and CD, intersect at point E. find the values of x and y given that: the measure of angle AED equals (10x+9y), the measure of angle AEC equals (xy), and the measure Algebra -> Angles -> SOLUTION: two lines, AB and CD, intersect at point E. find the values of x and y given that: the measure of angle AED equals (10x+9y), the measure of angle AEC equals (xy), and the measure Log On

Step-by-step explanation:

7 0

3 years ago

Zoe paid $18.60 in sales tax and tips for her dinner. The sales tax rate is 11% percent, and she tipped 20, percent. (The sales

bogdanovich [222]

Answer:

I don't know, I'm just doing this to get points. lol

Step-by-step explanation:

3 0

2 years ago

Suppose the number of inches of rainfall each year in a city is normally distributed. For a random sample of years, the confiden

quester [9]

Answer:

The confidence interval for the mean is given by the following formula:

$\bar X \pm z_{\alpha/2}\frac{\sigma}{\sqrt{n}}$ (1)

Or equivalently:

$\bar X \pm ME$

For this case we have the interval given (3.9, 7.7) and we want to find the margin of error. Using the property of symmetry for a confidence interval we can estimate the margin of error with this formula:

$ME= \frac{Upper -Lower}{2}= \frac{7.7-3.9}{2}= 1.9$

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".

$\bar X$ represent the sample mean for the sample

$\mu$ population mean (variable of interest)

Solution to the problem

The confidence interval for the mean is given by the following formula:

$\bar X \pm z_{\alpha/2}\frac{\sigma}{\sqrt{n}}$ (1)

Or equivalently:

$\bar X \pm ME$

For this case we have the interval given (3.9, 7.7) and we want to find the margin of error. Using the property of symmetry for a confidence interval we can estimate the margin of error with this formula:

$ME= \frac{Upper -Lower}{2}= \frac{7.7-3.9}{2}= 1.9$

4 0

3 years ago

A ramp is being built and attached to a building to help with deliveries. The angle that the bottom of the ramp makes with the g

Kruka [31]

Answer: The measure of the other acute angle is 52.8°

Step-by-step explanation:

Hi, since the situation described forms a right triangle ( see attachment) , we know that the three interior angles of a right triangle add up to 180 degrees.

The value of one angle is given = 37.2°.

Since is a right angle it has also a right angle of 90°.

So we can write an equation:

x + 37.2 + 90 = 180

Where x is the measure of the other acute angle.

Solving for x:

x = 180-90-37.2

x = 52.8°

6 0

3 years ago