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eduard
4 years ago
6

What is -8.10 x 10–3 in standard notation?

Mathematics
1 answer:
MaRussiya [10]4 years ago
8 0

Answer:

_8.1* 7= _56.7

Step-by-step explanation:

You might be interested in
The following data represent the flight time​ (in minutes) of a random sample of seven flights from one city to another city. 28
anzhelika [568]

Answer:

Range = 281-256= 25

In order to calculate the sample deviation we need to calculate the mean given by:

\bar X = \frac{\sum_{i=1}^n X_i}{n}

And replacing we got:

\bar X= 265

And the standard deviation can be calculated with this formula:

s = \sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n-1}}

And replacing we got:

s = 8.426

Step-by-step explanation:

For this case we have the following data given:

281​, 269​, 259​, 265​, 256​, 259​, 266

The range is defined as:

Range = Max -Min

And if we replace we got:

Range = 281-256= 25

In order to calculate the sample deviation we need to calculate the mean given by:

\bar X = \frac{\sum_{i=1}^n X_i}{n}

And replacing we got:

\bar X= 265

And the standard deviation can be calculated with this formula"

s = \sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n-1}}

And replacing we got:

s = 8.426

4 0
3 years ago
Paul's budget for food is 30% of the budget he has for rent.
SpyIntel [72]

Paul's rent budget is <u>$750</u>, given that his food budget of $225, is 30 percent of his rent budget.

<h3> What are fractions?</h3>

Fractions are representation of quantities as a part of a certain quantity.

Written as <u>a/b</u>, read as <u>a by b</u>, and functions as <u>a divided by b</u>, represents a fraction showing a parts of b equal parts.

a is called the numerator, and b is called the denominator.

<h3>What are percentages?</h3>

Percentages are modified fractions where the whole quantity is represented by 100.

To convert a fraction into percentages we multiply it by 100, while to convert percentages to fraction divided by 100.

<h3>How to solve the question?</h3>

In the question, we are given that Paul's budget for food is 30% of the budget he has for rent.

We are asked if his budget for food is $225, what is his budget for rent.

We assume Paul's budget for rent to be $x.

We know that Paul's food's budget is 30 percent of his rent.

Hence, Paul's food budget = 30% of x.

or, Paul's budget for food = 30/100 * x {To convert percentages to fraction divided by 100}

But, we know that Paul's food budget is $225. Thus, we can show that:

225 = 30/100 * x,

or, x = (225*100)/30 = 750.

Thus, Paul's rent budget is <u>$750</u>, given that his food budget of $225, is 30 percent of his rent budget.

Learn more about percentages at

brainly.com/question/843074

#SPJ2

3 0
2 years ago
Read 2 more answers
Can someone help me with this question?
Tomtit [17]
It is the first choice. 3 times 5/2 is 15/2 which equals 7.5 and 12 times 5/2 is 60/2 which equals 30. 7.5 times 30.
3 0
4 years ago
Read 2 more answers
Hey what is the slope of the line and what is the value of n
lidiya [134]
A and B with work shown

3 0
3 years ago
Sara goes on a slingshot ride in an amusement park. She is trapped into a spherical ball that has a radius of 3•100 centimeters.
tankabanditka [31]

Answer: <em>1.1 × 10⁸ cm³</em>


Explanation:


1) Since the ball is spherical, you use the volume formula for a sphere, which is:


Volume = [4/3] π r³


2) r is the radius, which is given and is equal to 3×100cm = 300cm


3) Pluging in the value of r, you get:


Volume = [4/3] π (300 cm)³ = 113,097,335.53 cm³


4) Since, r = 3×100 cm has two significant figures, the result must show only two significant figures.


So, using scientific notation, the right answer must be reported as:<em> 1.1 × 10⁸ cm³</em>

4 0
3 years ago
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