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WINSTONCH [101]

3 years ago

15

the ratio of blue marbles to white marbles and summer bag is equal to 1 to 2 if there are 20 blue marbles how many white marbles

are there

2 answers:

iragen [17]3 years ago

8 0

Answer:

It’s 30 marbles

Step-by-step explanation:

Svet_ta [14]3 years ago

6 0

The answer is 30 marbles

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ASAP! GIVING BRAINLIEST! Please read question 10 THEN answer correctly! No guessing.

Lana71 [14]

Answer:

$x\degree = 75\degree$

Step-by-step explanation:

Property used: <em>An exterior angle of a triangle is equal to the sum of the opposite interior angles.</em>

$= > 62\degree + (x + 13)\degree = 2x\degree \\ \\ = > 62\degree + x\degree + 13\degree = 2x\degree \\ \\ = > 75\degree = 2x\degree - x\degree \\ \\ = > 75\degree = x\degree \\ \\ = > x\degree = 75\degree$

4 0

3 years ago

If x metres of string are cut from a piece y metres long how much is left?

Karolina [17]

Answer: The new length is: (y - x) metres.

Step-by-step explanation:

If we have a piece of string that is y metres long, and we cut x metres of strings from it, then the new length of the string will be equal to the difference between the initial length and the amount that we cut off.

So the initial length is y metres.

We cut x metres.

The new length is: (y - x) metres.

6 0

3 years ago

In a large population, 82% of the households have cable tv. A simple random sample of 225 households is to be contacted and the

anzhelika [568]

Answer:

The mean of the sampling distribution of the sample proportions is 0.82 and the standard deviation is 0.0256.

Step-by-step explanation:

The Central Limit Theorem estabilishes 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 proportions, the mean is $\mu = p$ and the standard deviation is $s = \sqrt{\frac{p(1-p)}{n}}$

In this problem, we have that:

$p = 0.82, n = 225$ .

So

$\mu = 0.82$

$s = \sqrt{\frac{p(1-p)}{n}} = \sqrt{\frac{0.82*0.18}{225}} = 0.0256$

The mean of the sampling distribution of the sample proportions is 0.82 and the standard deviation is 0.0256.

7 0

3 years ago

Read 2 more answers

I AM IN A TEST AND I NEED THE ANSWER SOON!!! PLEASEE!!!<br><br> THANK YOU SO MUCH!!

mart [117]

Hello,

If Viviana has 2/5 of pasta to share with four friends, you should divide. First change 2/5 to a decimal, 0.4. Now divide 0.4 and 4.

Workspace:

2/5 = 0.4

4 / 0.4 -> 10

Workspace End

Correct Answer:

10

Hope this helps!!
Brainliest??

8 0

3 years ago

A data set has the following statistical measures.

bezimeni [28]

Answer:

There is a large outlier.

Step-by-step explanation:

4 0

3 years ago