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3 years ago

What is the value of this expression?

Mathematics

2 answers:

OLEGan [10]3 years ago

4 0

Multiply the decimal numbers:

5.3 x 4.2 = 22.26

When multiplying scientific numbers, add the exponents together: 4+3 = 7

So you now have 22.26 x 10^7

Now you need to convert 22.26 to a scientific number, by only having one number to the left of the decimal point.

You need to move the decimal 1 place to the left, which means you need to add 1 more to the exponent.

The final answer would be 2.226 x 10^8

pantera1 [17]3 years ago

3 0

22.26 x 10^7 is the correct answer

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Jason and Yolanda both drew a simple random sample from a non-normally distributed population of 25,000. Jason’s sample consiste

UkoKoshka [18]

Answer: Last Option is correct.

Step-by-step explanation:

Since we have given that

Total number of population = 25000

Percent of sample of Jason = 0.24%

Percent of sample of Yolanda's = 0.32%

So, Number of population according to Jason's sample is given by

$\frac{0.24}{100}\times 25000\\\\=0.0024\times 25000\\\\=60$

Number of population according to Yolanda's sample is given by

$\frac{0.32}{100}\times 25000\\\\=0.0032\times 25000\\\\=80$

Both the sample can be used to make inferences about the population

Hence, Last Option is correct.

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3 years ago

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If 3ax+b+c, then x equals?

Viktor [21]

This is not an Equation! this is an Sentence in Al Jebra!
but you means : if 3ax+b=c, then x =?
3ax=c-bX = $x= \frac{c-b}{3a}$

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3 years ago

Jori has 7 boxes of books,with each box holding the same number of books.he has126 books in all how many books are there per box

bazaltina [42]

Let b be the number of books in a box. Then we can say that the total number of books is equal to the number of boxes times the number of books per box.

7b=126 divide both sides by 7

b=18

So there are 18 books per box.

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2 years ago

A circle has a circumference of 361\pi361π361, pi. What is the diameter of the circle?

denpristay [2]

Remember, $C=\pi d$ , where $C$ is circumference and tex]d[/tex] is the diameter. They are related by a constant $\pi$ (pi).

We can solve the above equation for d and then substitute our known values.
$C=\pi d$

$d= \dfrac{C}{ \pi } = \dfrac{361 \pi }{ \pi } = 361 \ units$

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3 years ago

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Xelga [282]

Round to one decimal place
so you round the .8
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2 years ago

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