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dolphi86 [110]
3 years ago
14

Which statement about this figure is true?

Mathematics
1 answer:
GuDViN [60]3 years ago
6 0

Answer:

a. it has rotational symmetry with an angle of rotation of 90°

Step-by-step explanation:

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Find the midpoint of the segment below and enter its coordinates as an
kodGreya [7K]

Answer:

(\frac{5}{2}, 3)

Step-by-step explanation:

I got 5/2 as my x variable and 3 for my y variable to being the midpoint. In which I added both my x variables provided ( 3 and 2 ) and then I divided them by two to get half of that (since you are looking for in between those two digits technically so you are wanting to find the midpoint or the middle of that line segment). I also did the same with the two y variables as well which were 7 and -1, then I divided both by two to get the variable 3.

4 0
3 years ago
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A simple random sample of earthquake depths yields the following:
GREYUIT [131]

The critical value becomes 2.584 for two tailed test since we have to reject the null hypothesis, t >2.584 or t < -2.584 test stat lie in the rejection region, we have to reject the null hypothesis or claim incorrect.

Data;

  • mean = 5.82
  • s = 4.93
  • n = 600
<h3>Test-Static t </h3>

Let's calculate the t-value

t = \frac{x - \mu}{\frac{s}{\sqrt{n} } }

Substitute the values into the equation and solve;

t = \frac{x - \mu}{\frac{s}{\sqrt{n} } } \\t = \frac{5.82 - 5}{\frac{4.93}{\sqrt{600} }} \\t = \frac{0.82}{0.201} \\t = 4.079

The t-value is 4.079.

The allowed significance value = 0.01

The degree of freedom is n -1, which becomes 600 - 1 = 599.

The critical value becomes 2.584 for two tailed test since we have to reject the null hypothesis, t >2.584 or t < -2.584 test stat lie in the rejection region, we have to reject the null hypothesis or claim incorrect.

Learn more on t-test here;

brainly.com/question/6501190

7 0
3 years ago
Please explain and help​
Lilit [14]

Answer:

im not really smart lol

Step-by-step explanation:

4 0
3 years ago
Find the measure of the angle indicated by the red arrow.
Zanzabum

Let the remaining angle be x
X+75=180( being straight angle)
Or x=180-75
.’. X= 105 is the ans
5 0
3 years ago
PLEASE HELP!!!!!!!!!!
erastovalidia [21]

Answer:

The line graph

Step-by-step explanation:

Why the line graph is more professional and simple to see and understand. And is the preferred graph for numbers, unlike the box graphs its preferred for comparing.

8 0
3 years ago
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