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2 years ago

I am a number. When you multiply me by 2, then divide by 3, the answer is 4. What number am I?

Mathematics

2 answers:

shusha [124]2 years ago

8 0

Answer:

You are the number 6.

Step-by-step explanation:

6 times 2 is twelve divided by three is 4

valentina_108 [34]2 years ago

4 0

Answer: 6

Step-by-step explanation: To solve this problem, I would work backwards.

Start with 4 and multiply it by 3 to get a product of 12. Now, we can do the inverse operation of multiplying which is diving and we get a quotient of 6.

This means that the number is 6.

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Question help the average income in a certain region in 2013 was $62 comma 00062,000 per person per year. suppose the standard

Iteru [2.4K]

Part a
The sample size is large enough to use the central limit theorem because it is greater than 30.

Part b.
The mean of the sampling distribution is 62000.
The standard error is computed as
$SE=\frac{s}{\sqrt{n}}=\frac{27000}{\sqrt{100}}=2700$

Part c.
Compute for the corresponding z-score of more than 2700 from the population mean.
$z=\frac{2700}{2700}=1$

Therefore,
$P\left(z\ \textgreater \ 1\right)=0.1587$

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3 years ago

A cube has side length a.The side lengths are decreased to 30% of their original size.Write an expression in simplest form for t

jeka94

Answer:

Volume V = 0.027a^3

Step-by-step explanation:

Let a represent the length of the side length of the cube.

a.The side lengths are decreased to 30% of their original size;

l = 30% of a

l = 0.3a .....1

The volume of a cube can be expressed as;

V = l × l × l

V = l^3 .......2

Where;

l = side length

Substituting the value of l into equation 2;

V = l^3 = (0.3a)^3

V = 0.027a^3

Volume V = 0.027a^3

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3 years ago

- The functions y = 2x + 4 and y = 2x + 1 are graphed

denpristay [2]

You can they'll never intersect because both of their slopes are 2
*linear functions with the same slope are always parallel*

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3 years ago

Is the factored form of 4k^2-28k+49

oksano4ka [1.4K]

It should be (2k - 7)^2

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3 years ago

Find the number of subsets for the following set. {3, 4, 5} How many subsets does this set have? nothing (Type a whole number

AlexFokin [52]

8. When you’re making subsets, you have two options for each element in the original set: you can either include it or not. This gives you 2 x 2 x 2 = 8 possible ways you can put a subset together from the three elements in {3, 4, 5}.

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3 years ago