How do you write 4.2x10^5 in scientific notation

Answers

Answer 1

Answer:

420000 should be the answer

Step-by-step explanation:

Answer 2
You already have it in scientific notation

Related Questions

it took Jenny and her family one hour to drive to her grandmother's house her grandmother lives about 45 miles away at what rate did the Family Travel ​

Answers

Answer:

The family traveled at 45 miles per hour.

Step-by-step explanation:

4. Which of the following is equivalent to the
expression below?
4x + 3(2x +1) + 4x
A 14x
,
C 14x + 3
B6x + 3
D 14x - 3
5. What are the like terme in the av

Answers

Answer:

14x+3

Step-by-step explanation:

The given expression is as follows :

4x + 3(2x +1) + 4x

We need to find the equivalent expression for the above.

So,

4x + 6x +3 + 4x

Adding x terms,

14x+3

Hence, the correct equivalent expression is 14x+3.

Jayden is starting a business selling handmade necklaces. He has decided to invest an initial amount of $300 for advertising, and materials cost $8 for each necklace he makes. Jayden can sell his creations for $14 per necklace. Once he makes and sells a certain number of necklaces, he will break even, with identical expenses and sales. How many necklaces would that take?

Answers

Answer:

14-8=6/300=50 thats your answer

Find the equivalent ratio 5:22____ : 66
A.3
B.15
C.5
D.1/5​

Answers

Answer:

B: 15

Step-by-step explanation:

22 x 3 = 66, so you have to multiply 5 by 3,

5 x 3 = 15, and there is your answer!

Answer:

your answer is B

Step-by-step explanation:

If you multiply 5x3 you get 15, and if you multiply 22 is 3 you get 66.

5:22 is just a simplified version of 15:66

*WORTH 100 POINTS*

What is the value of x?

Enter your answer in the box.

Answers

Answer:

39

Step-by-step explanation:

sum of interior angles of a triangle is 180

180-(102+39)=x

180-141=x

39=x

Answer:

39

Step-by-step explanation:

it should all add up to 180

102 + 39 = 141

180 - 141 = 39

8n+16.2=1.6



Plzzz

Help ,

Answers

Answer:

8n+16.2=1.6

n=-1.825

Step-by-step explanation: Subtract 16.2 from both sides 8n+16.2-16.2=1.6-16.2

Simplify 8n=-14.6/8

n=-1.825

Answer:

-1.825

Step-by-step explanation:

8n  +  16.2  =  1.6

(step1)      

8n  +  16.2  =  1.6

        - 16.2     -16.2

                       

8n      =      -14.6

(step2)

8n =  -14.6

----    ------

 8      8

(step3)

-1.825

1. subtract 16.2 from both sides, you have to get rid of the number that is being add/subtracted to get the n and result alone

2. divide by the number next to the variable since you have to get the variable alone in order to find out what it is. you divide because you have to do the opposite of what the variable IS doing.

3. get the result lol

Rachel paid $25.50 for three t-shirts. What was the unit price of the t-shirts?

A:$7.65 per shirt
B:$8.05 per shirt
C:$8.50 per shirt
D:$9.50 per shirt​

Answers

C: $8.50 per shirt $25.50/3

Answer:

C

Step-by-step explanation:

You do $8.50 Times 3 to get $25.50

MHANIFA PLS HELP ME :), or it cud just be anyone :)rEALLY EZ PLS HELP!!! ASAP TY :)




show all work converto to radical form and simplify if possibblr 36-^3/2

Answers

Answer:

216

Step-by-step explanation:

36^(3/2) = (6^2)^(3/2) =6^(2*3/2) =6^3 = 216

Answer:

[36^3] squared

Step-by-step explanation:

formula a x/n= n [a^x] squared

a x/n= n [36^3]

[36^3] squared

help!! slove for x, 13x + 47 = 151

Answers

Answer:

Step-by-step explanation:

13x + 47 = 151

subtract 47 from both sides

13x = 104

divide by 13 on both sides

x = 8

Three times the sum of a number, n, and 5 is at least 17. Which of the following inequalities properly models
this statement?
(1) 3n+5<17
(3) 3(n+5) 217
(2) 3n+5217
(4) 3(n +5) <17

Answers

Answer:

Step-by-step explanation:3

Answer: 3(n + 5) ≥ 17

HOPE THIS HELPS

The average weight of ten bulls is 500kg and the standard deviation of the weight is 30kg. What would be the weight of a bull that is 6 standard deviations above the mean weight

Answers

Answer:

680kg

Step-by-step explanation:

The average weight of ten bulls is 500kg and the standard deviation of the weight is 30kg. What would be the weight of a bull that is 6 standard deviations above the mean weight

The formula to solve for the weight that is 6 standard deviation above the mean weight =

μ + 6σ = w

Where

μ = Mean weight = 500kg

σ = Standard deviation = 30kg

Hence:

w = 500kg + 6(30kg)

w = 500kg + 180kg

w = 680kg

Therefore, the weight of a bull that is 6 standard deviations above the mean weight is 680 kg

Using the normal distribution, it is found that the weight of a bull that is 6 standard deviations above the mean weight is of 680 kg.

Normal Probability Distribution

In a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the z-score of a measure X is given by:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

It measures how many standard deviations the measure is from the mean. After finding the z-score, we look at the z-score table and find the p-value associated with this z-score, which is the percentile of X.

In this problem, the mean and the standard deviation are, respectively, of [tex]\mu = 500[/tex] and of [tex]\sigma = 30[/tex].

The weight of a bull that is 6 standard deviations above the mean weight is X when Z = 6, hence:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]6 = \frac{X - 500}{30}[/tex]

[tex]X - 500 = 6 \times 30[/tex]

[tex]X = 680[/tex]

The weight of a bull that is 6 standard deviations above the mean weight is of 680 kg.

More can be learned about the normal distribution at https://brainly.com/question/24663213

What's 33 divided by 25.41

Answers

Answer:

1.298701298701

Step-by-step explanation:

hope this helped

Answer:

1.37741046832

Step-by-step explanation:

Alonzo charges $150 for 5 hours of tutoring.
What is his rate per hour.
I’m confused

Answers

he charges $30 per hour . 150 divided by 5 gives you $30

Answer:

C: $30/hr

Step-by-step explanation:

In order to find the rate per hour you must divide: 150 ÷ 5

Which will give you 30

Also if you took away the 0 in "150" then it would be like says "15 ÷ 5" which is 3 but then you have to add the zero back making it 30

Therefore your overall answer is going to be C, $30/hr

Evaluate: 25 - 2t, when t = 5

Answers

Answer:

15

Step-by-step explanation:

25 - 2t

t = 5

25 - 2(5)

25 - 10

= 15

Answer:

15

Step-by-step explanation:

The equation with the value t substituted for 5 will look like 25 - (2)5

first you multiply 2 and 5 because pemdas.

The equation Is now 25-10

25-10 is 15

The answer is 15

in the first third of the season the team played 18 games how many games will the team play during the whole season​

Answers

Answer:

54

Step-by-step explanation:

all you have to do is times 18 by 3

The answer would be 54

which of the following is not necessary to book a flight
a) credit card
b) arrival city
c) drivers license
d) date of travel​

Answers

It’s “ c “ a drivers license is not necessary!

The option C. Driver's License is not necessary to book a flight.

What is Driver's License?

Driver's License is an official document given to a person who is permitted to drive vehicle on the road.

This is usually given after certain tests including Physical driving and other general knowledge of driving.

Now, when we book a flight, credit card can be used to book a flight, but not necessary.

But there is a chance than you can use the credit card.

Arrival city is necessary when you book a flight because then only other procedures will follow.

Similarly, date of travel is also required in order to book the flight on a particular day.

So the least necessary document is Driver's License.

Hence Driver's License is not necessary to book a flight.

To learn more about Booking a Flight, click :

https://brainly.com/question/30019956

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The model below shows the product of two fractions. Which expression does the
model represent?
12
13
16
3
х
16

Answers

13 -‘ 16
That’s i don’t know lol




Keith’s

Calculate the approximate difference between 1 mile and 2 km.
Give your answer in metres. ​

Answers

Answer:

Approximate difference between 1 mile and 2 km in meters = 390.66meters

Step-by-step explanation:

I mile =1609.34meters

also 1000m = 1km

therefore 2km = 2 x 1000= 2000m

Approximate difference = 2000m - 1609.34m

=390.66 meters.

 Approximate difference between 1 mile and 2 km in meters = 390.66meters

Four times Audrey’s age plus 7 is Parag’s age. Parag is 51. What is
Audrey’s age?

Answers

Answer:

I think 5.

Step-by-step explanation:

You'd do this backwards.

51 ÷ 4 = 12.75

12.75 - 7 = 5.75.

You could either round that to 6 or keep it at 5.

Answer:

I believe it is 5 or 6. the answer I got was 5.75 so I am leaning towards 6 but I would let someone else answer.

Step-by-step explanation:

ok so we have 51 so then you would divide by 4 and subtract 7.

Pleaseee helppp answer correctly !!!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!!!!!

Answers

Answer:

5 units

Step-by-step explanation:

the height of the lighthouse is 36.5 m. find the distance of the ship from the lighthouse if it is visible from the ship at an angle of 1 °.​

Answers

Answer:

I don't get it send a pic of the question Please I will see if I can help

30 POINTS

Identify the following for the exponential function y = 5(1/4)x.

a. Growth or decay?

b. Initial value

c. Growth/decay factor

d. Growth/decay rate (as a percentage)

Answers

Answer:

A)

Decay

B)

Initial value is 5.

C)

The decay factor is 0.75.

D)

75%

Step-by-step explanation:

An exponential function is given by:

[tex]f(x)=a(r)^x[/tex]

Where a is the initial value and r is the rate.

We have the function:

[tex]y=5(1/4)^x[/tex]

So, a = 5 and r = 1/4.

A)

Remember the guidelines:

It is exponential growth if r > 1. And it is exponential decay if r < 1. (And r must be positive.)

Our rate is 1/4 or 0.25.

It is less than 1, so our function is exponential decay.

B)

The initial value is the value in front of our rate.

So, our initial value in this case is 5.

C)

The decay factor will be 1 - r, where r is our rate.

Since our rate is 0.25, our decay factor is 1 - 0.25 = 0.75.

So, we are decaying by a factor of 0.75.

D)

To convert a decimal to a percent, we move the decimal dot two places to the rght and add a percent sign.

So, 0.75 will be 75.0 % or smply 75%.

It is a 75% decay.

For the question, calculate the slope of a line that passes through the points given. Remember to reduce all fractions to lowest terms.

(-14, 18), (-16, 14)

Answers

Answer:

the answer is 2 or 2/1 hope this helps

Answer:

In fraction form, the slope is 2/1.

Or, the slope is just 2.

Step-by-step explanation:

Using the equation:

m =  

y2 - y1  /

x2 - x1

Plug in the x and y points and solve.

note: m = slope in slope intercept form, y - mx + b

y2 = 14     y1 = 18

x2 = -16     x1 = -14

14 - 18 / -16 -(-14)

-4 / -2

Simplified: -2 / -1

In fraction form, the slope is -2 / -1, or 2/1 because either way works.

Or, the slope is just 2.

Hope this helps! If you have any additional questions, please don't hesitate to ask me or your teacher to be sure you master the subject. Stay safe, and please mark brainliest! :)

Ethan needs an 75% average in his writing class to pass. On his first 4 exams,
he earned scores of 68%,72%, 85%, and 90%. What is the minimum score
Ethan can earn on his fifth and final test to pass?
A. 80%
B. 70%
C. 68%
D. 60%

Answers

the answer would be d)60

The minimum average score Ethan can earn on his fifth and final test is option (D) 60% is the correct answer.

What is an average?

An average of a list of data is the expression of the central value(mean) of a set of data. Average is calculated by adding quantities together and dividing the total by the number of quantities.

For the given situation,

The scores for 4 exams are 68%,72%, 85%, and 90%.

Let the score for the fifth test be x.

Formula for the average,

[tex]A = \frac{Sum of individual scores}{Total number of tests}[/tex]

⇒ [tex]75=\frac{68+72+85+90+x}{5}[/tex]

⇒ [tex]375=315+x[/tex]

⇒ [tex]x=60[/tex]

Hence we can conclude that the minimum average score Ethan can earn on his fifth and final test is option (D) 60% is the correct answer.

Learn more about averages here

https://brainly.com/question/15902611

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HELP ME CHEAT

A small pouch contains 8 black marbles, 5 white marbles, and 12 red marbles.


Find the probability of picking a red then a black marble if you do not replace the first marble.



0.16



0.32



0.3



0.5

Answers

The answer would be 0.3

You purchase a new shirt that cost $18.00. Sales tax is added at the register at a rate of 7%. Thus time I would like to know what the total cost of the shirt is including sales tax?

Answers

The correct answer is $18.00 x 1.07 = $19.26

please help!!!!!!!!!!! 15 points and brainliestor whatever it’s called

Answers

Answer:

The answer should be [tex]9*10^{16}[/tex]

Step-by-step explanation:

In a triangle, the measure of the first angle is five times the
measure of the second angle. The measure of the third angle
is 40 less than five times the measure of the second angle.
What is the measure, in degrees, of each angle?

Answers

Call the 2nd angle x (in degrees).
Add the 3 angles.
The sum is 180 degrees.

WILL MARK BRAINLIEST IF EXPLAINED! G with FA and FE tangent at A and E.

Find mADB Find mABD Find mAFE Find mACE

PLEASE EXPLAIN HOW YOU GOT YOUR ANSWER! :)

Answers

The first one is 44 and the second one is 49

Answer:

angle ADB = 41 degrees

angle ABD = 90 degrees

angle AFE = 70 degrees

angle ACE = 31 degrees

Step-by-step explanation:

angle ADB = 41 degrees because minor arc AB = 82 degrees and it's inscribed angle is 1/2 of it's arc.

angle ABD = 90 degrees because arc AED = 180 degrees and inscribed angles are equal to 1/2 of the arc.

arc ABD = 180

arc ABE = arc ABD + 70 degrees = 250 degrees

minor arc AE = 360 degrees-250 degrees = 110 degrees

angle AFE = 1/2 (250-110) = 70 degrees

angle ACE = 1/2(110-48) = 31 degrees

John drove to visit his grandmother. To get there, he drove 157.5 miles on the highway and a few miles further on city streets. The highway part of his drive took him 2.5 hours. If John drove at a steady pace, how fast did he drive on the highway?

Answers

Answer: 63 mph

Step-by-step explanation:

Speed is determined by dividing the distance traveled by the time taken to travel it.

Speed = Distance of highway / Time spent on highway

= 157.5 / 2.5

= 63 miles per hour

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