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3 years ago

What is 0.0003840 expressed in scientific notation

2 answers:

5 0

You can write the fraction 0.0003840 a number of ways.
0.0003840 = 0.003840/10 = 0.03840/100 = 0.3840/1000 = 3.840/10000

The one we're interested in is the last one, which has one non-zero digit to the left of the decimal point. The power of 10 in the denominator is the 4th power (the number of zeros is 4). 10^4 in the denominator is equivalent to multiplying by 10^(-4) in the numerator.

Expressed in scientific notation,
$0.0003840=3.840 \cdot 10^{-4}$

Svet_ta [14]3 years ago

3 0

0.0003840

Written in scientific notation!

Move the decimal point.

.00384 x 10^1

.0384 x 10^2

.384 x 10^3

3.84 x 10^4

38.4 x 10^5

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(HELP ASAP PLEASE AND THANK YOU..)

Zigmanuir [339]

Hello!

As you can see, two of the triangles that we see that are made from the lengths we are given make up one face of the pyramid. We can use the triangle formula without multiplying by 1/2 to find the length of one face.

30(45)=1350

Now we multiply this by four to find all of the sides.

1350(4)=5400

We find the area of the square base

30(30)=900

Finally, we add up our lengths.

5400+900=6300

Therefore, our answer is C) 6400 yards²

I hope this helps!

7 0

3 years ago

When dividing two negative numbers does the order of the numbers matter? And why?

skelet666 [1.2K]

Answer:

It doesn't matter

Step-by-step explanation:

Negative by negative = positive

4 0

3 years ago

Find the solution of this system of equations -X + 8y = -35 -X - 9y = 50

grigory [225]

Answer: (-5,-5)

Step-by-step explanation: The two lines meet up at (-5,-5)

7 0

3 years ago

Read 2 more answers

In order to better decide how to market a new line of clothing, mary is researching the demographics of the customers of a certa

Tom [10]

Number of high school students which should the store expect next week, Mary predicts that the store will see 4,238 customers next week is 2392.

<h3>What is expected value?</h3>

The expected value is the long term average of the data or the mean of the data.

In order to better decide how to market a new line of clothing, Mary is researching the demographics of the customers of a certain clothing store.

She counted the number of customers who visited the store over the course of a month, and found out how many of the customers were high school students.

Her collected data is in the table below.

Week 1 2 3 4
Customers 2,848 3,141 3,861 3,911
Students 2,033 1,937 2,076 1,721

Mary predicts that the store will see 4,238 customers next week.

From using the long term mean value calculator for the provided data, the predicted value of the next week we get as 2392.

Hence, the number of high school students which should the store expect next week, Mary predicts that the store will see 4,238 customers next week is 2392.

Learn more about the expected value here;

brainly.com/question/15858152

6 0

3 years ago

Find II 2e-3f II^2 assuming that e & f are unit vectors such that II e +f II=sqrt(3/2).

sergey [27]

We are given that ||e|| = 1, ||f|| = 1. 

Since ||e + f|| = sqrt(3/2), we have 
3/2 = (e + f) dot (e + f) 
= (e dot e) + 2(e dot f) + (f dot f) 
= ||e||^2 + 2(e dot f) + ||f||^2 
= 1^2 + 2(e dot f) + 1^2 
= 2 + 2(e dot f). 

So e dot f = -1/4. 

Therefore, 
||2e - 3f||^2 = (2e - 3f) dot (2e - 3f) 
= 4(e dot e) - 12(e dot f) + 9(f dot f) 
= 4||e||^2 - 12(e dot f) + 9||f||^2 
= 4(1)^2 - 12(-1/4) + 9(1)^2 
= 4 + 3 + 9 
= 16.

6 0

3 years ago