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bogdanovich [222]
2 years ago
7

HELP PLS!! BRAINLIEST 5 STARS AND A THANKS!!!

Mathematics
1 answer:
Umnica [9.8K]2 years ago
5 0

Answer:

bbbbb;bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb

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Can you help with this question? I am kinda stuck.
ruslelena [56]

Answer:

  • 29400 cm²

Step-by-step explanation:

The cube has 6 equal faces.

<u>Total surface area:</u>

  • S = 6a²
  • S = 6*(0.7 m)² = 6*(70 cm) ² = 29400 cm²
4 0
2 years ago
Write an expression thar can ve used to sgiw the total cost,C, of all tickets
k0ka [10]
The answer is A

Hope this helps!!
8 0
2 years ago
Can someone please help, I'll give brainliest!!! WORTH 40 PTS!
Studentka2010 [4]

Answer:

X = 14.48528137

Step-by-step explanation:

  1. ADD 72 TO BOTH SIDES
  2. SQUARE ROOT 72
  3. ADD 6
  4. X = 14.48528137
5 0
2 years ago
How does the sample size affect the validity of an empirical​ argument? A. The larger the sample size the better. B. The smaller
astra-53 [7]

Answer:

A. The larger the sample size the better.

Step-by-step explanation:

Central Limit Theorem

The Central Limit Theorem establishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

For a proportion p in a sample of size n, the sampling distribution of the sample proportion will be approximately normal with mean \mu = p and standard deviation s = \sqrt{\frac{p(1-p)}{n}}

In this question:

We have to look at the standard error, which is:

s = \frac{\sigma}{\sqrt{n}}

This means that an increase in the sample size reduces the standard error, and thus, the larger the sample size the better, and the correct answer is given by option a.

7 0
2 years ago
A system of equations and its solution are given below.
ddd [48]

Answer:

a would be correct

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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