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2 years ago

Whats 15,677 and 30,944 and 87,142 and 62,763 round to the nearest ten thousands

1 answer:

6 0

15,677 = 20,000
30,944 = 30,000
87,142 = 90,000
62,763 = 62,000
Ten thousands means 10,000
But if it is something like 10,000 - 14,000 you round down
If it is 15,000 - 20,000 you round up
so 1-4 round down 5-10 round up

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2. A meeting room has 8 rows of

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Answer:60

Step-by-step explanation:

There are 80 chairs in all because 8 rows x 10 chairs per row. The first people fill two rows which is 20 chairs because each row is 10 chairs so 60 chairs are left

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3 years ago

Which statement CANNOT be represented by the expression t - 16

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Answer:

no statement

Step-by-step explanation:

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3 years ago

What are the first three common multiples of 3 and 7?

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3 - 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, 42, 45, 48, 51, 54, 57, 60, 63

7 - 7, 14, 21, 28, 35, 42, 49, 56, 63

First three common multiples of 3 and 7 are 21, 42, and 63.

Answer - 21, 42, 63

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3 years ago

Read 2 more answers

Suppose that a study of elementary school students reports that the mean age at which children begin reading is 5.9 years with a

Bas_tet [7]

Answer:

5.9 years.

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:

Mean of the population is $\mu = 5.9$

If a sampling distribution is created using samples of the ages at which 69 children begin reading, what would be the mean of the sampling distribution of sample means?

By the Central Limit Theorem, the same population mean, of 5.9 years.

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3 years ago

At the grocery store you choose to buy 4 items that cost: $2.69, $14.45, $8.05, and $13.95. Estimate the total cost of your groc

Travka [436]

Answer:

$39

Step-by-step explanation:

First, let's get the values of each number by rounding them off to the nearest dollar before adding them.

Remember that you have to round off the number up if it is being followed by a number equivalent to 5 and above. You have to retain the number if it is followed by a number less than 5.

1. $2.69 = $3

2. $14.45 = $14

3. $8.05 = $8

4. $13.95 = $14

Now that you have the rounded off numbers, you may add them.

Let's solve.

$3 + $14 + $8 + $14 = $39

The estimated total is $39.

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3 years ago