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denpristay [2]
3 years ago
14

What type of star has an absolute brightness of 5 and a surface temperature around 3,000 °C?

Mathematics
2 answers:
Agata [3.3K]3 years ago
7 0

Answer:

the answer is D.dwarf

~batmans wife dun dun dun...aka ~serenitybella

ad-work [718]3 years ago
5 0

Answer:

The answer is D. Dwarf

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Suppose that 6 years ago, Alice was four times as old as Betty. In 4 years from now, Alice will only be three times as old as Be
N76 [4]
4b=a then plus 10 to see if the age holds true to 3b=a in ten years. Then since the question is how old is she today? You must either add 6 to young age (of20) or minus 4 from the older (of 30).
So Betty would be 26 today.
5 0
3 years ago
What is 21,321 rounded to the nearest 100
likoan [24]

Answer:

21,300

That's rounding with the nearest hundredth

because 321 is neasrest 300 than 400

thats why the answer is

21,300

3 0
3 years ago
Read 2 more answers
Assume that we want to construct a confidence interval. Do one of the​ following, as​ appropriate: (a) find the critical value t
Feliz [49]

Considering that we have the standard deviation for the sample, the t-distribution will be used, and the critical value is t = 2.6682.

<h3>When should the t-distribution and the z-distribution be used?</h3>
  • If we have the standard deviation for the sample, the t-distribution should be used.
  • If we have the standard deviation for the population, the z-distribution should be used.

In this problem, σ is not​ known, hence we get the standard deviation of the sample from the histogram and the t-distribution is used.

Using a t-distribution calculator, considering a <em>confidence level of 99​%</em> and 56 - 1 = <em>55 df</em>, the critical value is t = 2.6682.

More can be learned about the t-distribution at brainly.com/question/16162795

4 0
2 years ago
Y=x+5<br> x-5y=-9<br> Can someone please help ASAP
Dmitriy789 [7]
X = -4
Y = 1

1 = -4 + 5
-4 - 5(1) = -9
7 0
2 years ago
Show work pls !!!!!!!!!!!
-Dominant- [34]

Answer:

36

Step-by-step explanation:

\frac{32}{24}  =  \frac{ab}{27}  \\ ab = 32 \times 27 \div 24 \\ ab = 36

7 0
3 years ago
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