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3 years ago

7

What is 2.8 × 104 in standard form?

2 answers:

masya89 [10]3 years ago

5 0

Answer:

291.2

Step-by-step explanation:

VMariaS [17]3 years ago

3 0

Answer:

28000

Step-by-step explanation:

<h2><u>Standard form </u></h2>

2.8 * 10^4

in standard form means

2.8 * ( 10 * 10 * 10 * 10 )

this is because 10 ^4 is interpreted as ( 10 * 10 * 10 * 10 )

hence 2.8 * 10^4

=<u> 28000</u>

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ipn [44]

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8 0

3 years ago

Choose all options that are expressions 6+5w 3-16v 4v+1 2v=0 18=v 7-v

Nataly [62]

Answer:

The expressions here are;

6 + 5w

3-16v

4v+ 1

7-v

Step-by-step explanation:

Here, out of the given set, we want to choose all options that are expression.

To do this, we should understand that expressions do not have the equality sign like equations

So expressions are those in the set in which we do not have an equality sign

The right answer is thus;

6 + 5w

3-16v

4v + 1

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8 0

2 years ago

.Last week, Jane made deposits of $64, $25,

HACTEHA [7]

B $25 is the answer

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2 years ago

Solve the problem. A variable x has the possible observations shown below. Possible observations of x: -3 -1 0 1 1 2 4 4 5 Find

svp [43]

Answer:

The z-score corresponding to an observed value of x of 2 is 0.215.

Step-by-step explanation:

We are given that a variable x has the possible observations shown below;

Possible observations of X: -3, -1, 0, 1, 1, 2, 4, 4, 5.

Firstly, we will find the mean and the standard deviation of X, i.e;

Mean of X, ( $\mu$ ) = $\frac{\sum X}{n}$

= $\frac{(-3)+ (-1)+ 0+ 1+ 1+ 2+ 4+ 4+ 5}{9}$

= $\frac{13}{9}$ = 1.44

Standard deviation of X, ( $\sigma$ ) = $\sqrt{\frac{\sum (X-\bar X)^{2} }{n-1} }$

= $\sqrt{\frac{(-3-1.44)^{2}+(-1-1.44)^{2}+......+(4-1.44)^{2}+(5-1.44)^{2} }{9-1} }$

= 2.603

Now, the z-score corresponding to an observed value of x of 2 is given by;

z-score = $\frac{X-\mu}{\sigma}$

= $\frac{2-1.44}{2.603}$ = <u>0.215.</u>

4 0

3 years ago

Shelby buys a balance beam priced at $735.40.If the sales tax is

amm1812

Answer:

the sales tax is $73.54

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers