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marshall27 [118]
2 years ago
15

How would you find the two triangles are similar?

Mathematics
1 answer:
harkovskaia [24]2 years ago
5 0

Answer:

The answer should be A.

Step-by-step explanation:

Well, to determine how two triangles are similar you first look at the image of what they give you.

As you can see the images shows only degree angles.

Looking at your option to see degree angles.

In some options, there is a side length of a triangle, but we aren't given a side length on both triangles so that answer does that apply.

Our last option is between A and D.

D is false as we determine the triangles are similar to each other.

RCW and VCB are vertically opposite meaning their 25° are the same to each other.

We know that every triangle adds up to 180.

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A random sample of 30 households was selected as part of a study on electricity usage, and the number of kilowatt-hours (kWh) wa
grin007 [14]

Answer:

The 98% confidence interval for the mean usage in the March quarter of 2006, in kWh, was (333.87, 416.13).

Step-by-step explanation:

We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 30 - 1 = 29

98% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 29 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.98}{2} = 0.99. So we have T = 2.462

The margin of error is:

M = T\frac{s}{\sqrt{n}} = 2.462\frac{91.5}{\sqrt{30}} = 41.13

In which s is the standard deviation of the sample and n is the size of the sample.

The lower end of the interval is the sample mean subtracted by M. So it is 375 - 41.13 = 333.87 kWh

The upper end of the interval is the sample mean added to M. So it is 375 + 41.13 = 416.13 kWh

The 98% confidence interval for the mean usage in the March quarter of 2006, in kWh, was (333.87, 416.13).

6 0
3 years ago
Denise has a stool with a circle seat on top. The diameter of the seat is 14inches, and she wants to know the area of the top in
saul85 [17]

Answer:21?

Step-by-step explanation:

7 0
3 years ago
The number 6231 is divisible by 3.
Oliga [24]

Answer:

true

Step-by-step explanation:

The answer would be 2,077

6 0
2 years ago
what is the equation for A 450-gallon tank full of water is draining at a rate of 20 gallons per minute.
zhuklara [117]

Answer: 150

Step-by-step explanation:

4 0
3 years ago
A picture of a cougar is 3/4in long, and the legend below it says 1 : 80. How long is the actual cougar?
stealth61 [152]
Basically the real one is 80 times the picture
80 times 3/4=80/1 times 3/4=240/4=60in=5ft
it is 5ft long or 60in
8 0
3 years ago
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