why is scientific notation useful? how is scientific notation used in the real world?

Answers

Answer 1
It is useful because there are some numbers that are either way too small or way too big to write out in standard form.And I don’t know the second part.Hope that helps!!
Answer 2
Scientific Notation is so useful is so many ways!!!!
It makes it easier to deal with because the long numbers are converted into smaller numbers. Like for example, 0.000000000000000000000000000000000000000000045 is converted into 4.5*10^44. Isn't that MUCH MORE simpler?!?!??!
It is also used to find masses, for example, like some metals or substances that have a really smaller mass. 



Related Questions

A warehouse floor has a perimeter of 6,615 feet. What is the perimeter of the floor in yards ? oh and please tell me how you got the answer

Answers

Since there are 3 feet in 1 yard you need to divide 6,615 divided by 3 which equals 2205 yards.
1 Yard = 3 feet
or 3 feet = 1 yard

to convert 6615 feet into yard, you have to divide it by 3.

6615 feet = 6615/3 yard = 2205 yard.

Your answer is 2205 yards.

Hope it helps!

0.39/0.75 as a decimal

Answers

If you are asking for .39 to be divided by .75 the answer is .52

multiple of pi plis xxx

Answers

 [tex] \pi [/tex] is an irrational number i.e. it cannot be written in the form of [tex] \frac{p}{q} [/tex] where p and q are integers and q is never equal to 0.

By multiples of [tex] \pi [/tex], we can write like:

1[tex] \pi [/tex] = [tex] \pi [/tex] = 3.14
2[tex] \pi [/tex] = 2*3.14 = 6.28
3[tex] \pi [/tex] = 3*3.14 = 9.42
In the same way, any integer n when multiplied by [tex] \pi [/tex], is a multiple of [tex] \pi [/tex]

A carpet costs $15 per square foot. If the area you want to carpet is 19.7 square meters, how much will it cost to buy the carpet?

Answers

$ 295 because you can multiple 15×19.7 is =295.5

How do you work out 49.2 x 10.3

Answers

Final answer:

To work out 49.2 x 10.3, you multiply the two numbers together.

Explanation:

To work out 49.2 x 10.3, you multiply the two numbers together.

Step 1: Multiply the whole numbers: 49 x 10 = 490

Step 2: Multiply the decimals: 0.2 x 0.3 = 0.06

Step 3: Add the results from step 1 and step 2: 490 + 0.06 = 490.06

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Solve 14n+q=rt-4n for n

Answers

Hey there!

In order to solve this, all you need to do is cancel out terms until you have n on one side of the equal sign and everything else on the other side. 

14n + q = rt – 4n (add 4n to both sides to combine 4n and 14n)
18n + q = rt (subtract q from both sides)
18n = rt – q (divide both sides by 18)
n = (rt – q) ÷ 18

Hope this helped you out! :-)

The solution for n is [tex]\( n = \frac{{q - rt}}{{10}} \)[/tex].

To solve for n in the equation -14n + q = rt - 4n, we need to isolate n on one side of the equation.

First, let's gather all terms involving n on one side. Adding 4n to both sides of the equation, we get:

-14n + 4n + q = rt

Simplifying the left side, we have:

-14 + 4)n + q = rt

-10n + q = rt

Next, let's isolate n by moving the term q to the other side. Subtracting q from both sides, we have:

-10n = rt - q

Finally, to solve for n, divide both sides by -10:

[tex]\[ n = \frac{{rt - q}}{{-10}} \][/tex]

So, the solution for n is [tex]n = \frac{{q - rt}}{{10}} \)[/tex].

Which option below correctly describes the domain of and explains why the range of b is not all real numbers?

Answers

what are the options?^

is the decimal 13/3 a rational number? explain

Answers

13/3 is not a rational number because the quotient of 13 divided by 3 is 4.3 repeated. Any repeating number is not rational. Hope that helps!
Yes.

All rational numbers can be represented by a ratio of two integers. Since 3 and 13 are both integers, 13/3 is rational.

The deciml form of 13/3 is 4.3333... The decimal form of all rational numbers are either repeating or terminating. This one repeats.

A relay race is 1/10 kilometer long. Four athletes will run an equal distance to complete the relay. How far does each athlete run ?

Answers

25 metres. Because 1/10th of a kilometre is a 100 metres. And four athletes divided by 100 metres is 25 metres.

Answer:

25 meters.

Step-by-step explanation:

Let us suppose each athlete run x km.

Hence, four athlete will run 4x km.

Now, the distance of the relay race is 1/10 km

Thus, we have

[tex]4x=\frac{1}{10}[/tex]

Divide both sides by 4

[tex]x=\frac{1}{40}km[/tex]

Now, 1 km = 1000 meters. Thus, we have

[tex]x=\frac{1}{40}\times1000\\\\x=25[/tex]

Thus, each athlete run 25 meters.

Five times the sum of some number plus 3 is equal to 7 times the number minus 1.

Answers

5(x+3)=7x-3 which is the equation, then we solve for it, and the answer is 9

Frank is building a table. He needs 4 pieces of wood for the table legs. Each piece of wood needs to be 7/8 of a foot long. What is the total amount of wood he needs for the legs?
A. 3 1/2 feet
B. 3 2/5 feet
C. 4 4/7 feet
D. 4 7/8 feet

Answers

Final answer:

The correct option is (A) 3 1/2 feet. To find the total amount of wood Frank needs for the table legs, multiply the length of one leg (7/8 foot) by 4, the number of legs, resulting in 3 1/2 feet of wood in total.

Explanation:

Frank needs four pieces of wood, each 7/8 of a foot long for the table legs. To find the total amount of wood required, we multiply the length of one piece by the number of pieces:

Multiply the length of one leg, 7/8 foot, by the number of legs, which is 4.
(7/8) foot x 4 = (7/8) x 4/1 = 28/8 = 3.5 feet

Therefore, Frank needs 3 1/2 feet of wood in total for the table legs.

Write two expressions where the solution is 4

Answers

16 divided by 4 = 4

7 + 3 - 6 = 4

or

40 divided by 5 - 4 = 4

Answer:

[tex]2+2=4[/tex]

[tex]\frac{8}{2}=4[/tex]

Step-by-step explanation:

We are asked to write two expressions where the solution is 4.

We can write infinitely many solutions whose solution is 4. Some of the expressions are as follows:

[tex]3+1=4[/tex]

[tex]2+2=4[/tex]

[tex]\frac{8}{2}=4[/tex]

[tex]\frac{16}{4}=4[/tex]

[tex]8-4=4[/tex]

[tex]6-2=4[/tex]

[tex]2\cdot 2=4[/tex]

Therefore, all of these expressions satisfy the given condition.

What is the prime factorization of 375

Answers

Answer:

See the image for the answer.

While trying to explain a physics concept, a student said, "Stuff keeps doing what it's doing unless something messes with it." What law was the student summarizing? Explain your answer.
Your answer

When a soccer player kicks a ball, the ball accelerates. Explain what causes this acceleration in terms of forces.
Your answer

Describe three examples from sports in which a force changes the velocity of an object or a person.
Your answer

Explain which has greater inertia; a speeding car or a jet airplane sitting on the runway.
Your answer

Do forces always cause motion, explain?
Your answer

Answers

1) Newton's first law of motion
2)The soccer ball accelerates because of the force the soccer player exerts on the ball.
4)Inertia is the act of not doing anything. Therefore, the jet airplane sitting on a runway has the greatest inertia because it is literally doing nothing.
5)Forces DO NOT always cause motion. friction is a force that goes against a motion, this is a resistant force. 

Sorry but I wouldn't want to inaccurately answer #3, so I didn't do it.

Answer:

Step-by-step explanation:

1. Newton's first law of motion: Also called the law of inertia, states that "An object at rest remains at rest, or if in motion, remains in motion at a constant velocity unless acted on by a net external force"

2. According to Newton's second law "the force (F) acting on an object is equal to the mass (m) of an object times its acceleration (a)", meaning that when the soccer player kicks a ball, a force is acting on the ball, therefore increasing it's acceleration. After the force is applied, the gravity and the resistance of air will be the ones in charge of stopping the ball.

3. a) Baseball: The ball changes direction and speed when it's hit with the bat.

b) Bowling: When the ball hits the pins, the change from being at rest to a higher velocity.

c) Wrestling: The wrestler exerts a force on the oponent increasing or decreasing it's velocity.

4. The jet airplane has more inertia. Inertia is the resistance of an object to move if at rest, or to change its velocity and it is proportional to the mass of the object. Therefore, the jet airplane being heavier than the car will have more inertia. It has to be clear that it is not due to the fact that is at rest that is the one with more inertia, but mostly related to the mass. If the example was with two cars, one at constant velocity and the other at rest, both with the same mass, the one with greater inertia will be the one moving.

5. No, forces do not always cause motion. They have to be greater than the forces that oppose movement, such as friction, air resistance or gravity.

what is the answer to 2(0.5c−1.5)−6=−2 please show work!!!!

Answers

ANSWER: c = 7

WORK:
2(0.5c - 1.5) - 6 = -2
c - 3 - 6 = -2
c - 9 = -2
c - 9+9 = -2+9
c = 7
2(0.5c - 1.5) = -2 + 6

2(0.5c - 1.5) = 4

0.5c - 1.5 = 4/2

0.5c - 1.5 = 2

0.5c = 2 + 1.5

0.5c = 3.5

c = 3.5/0.5

Lastly simplify

Answer: c = 7.

What is the correct solution to this problem? A number divided by 3 is four more than –11. What is the number?

A-45
B-21
C-7/3
D45

Answers

If we represent the number as n, we get n/3=-11+4 since that number divided by 3 is 4 more than -11. Therefore, we get n/3=-7. Multiplying both sides by 3, we get n=-21

Geometry class there are 15 boys and 10 girls. The students are presenting projects to the class. If Mrs. Brown selects students at random for presentations, what is the probability that the first 2 students chosen are girls?

Answers

The probability is 2/25

Nancy bought an extra-large bag of 1,500 beads to make necklaces. When she got home, she found another bag with 660 beads in it. If she uses all of the beads and uses 60 beads per necklace, how many necklaces can she make?

Answers

She can make 36 necklaces.

what is 9 + 6 + (-6)

Answers

9 + 6 - 6
9 + 0
9

Hope this helped!
The answer is 9 as when you have an equation like that with a negative number in parentheses, the equation basically is 9 + 6 - 6

Solve the equation, justify each step with an algebraic property
-7=-1+ x/3

Answers

-7=-1+x/3
-7+1=-1+x/3+1 Additive property of equality
-6=x/3 Combine Like Terms
-6(3)=x/3(3) Multiplicative property of equality
-18=x           Distribution

Hope this helped!
Final answer:

The solution to the equation -7=-1+ x/3 is obtained by adding 1 to both sides, then multiplying both sides by 3 to solve for x. This yields x = -18.

Explanation:

To solve the equation -7=-1+ x/3, we can first isolate the x term using the addition and multiplication properties of equality.

First, add 1 to both sides to cancel out -1 from the right side of the equation. This gives us -6= x/3. Then, multiply both sides by 3 to solve for x. This gives us -18=x.

Hence, the solution to the equation -7=-1+ x/3 is x=-18.

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Jon travels 1/2 mile in 1/4 hour. Find the unit rate in miles per hour.

Answers

Final answer:

To find the unit rate in miles per hour, divide the distance by the time. In this case, Jon travels at a unit rate of 2 miles per hour.

Explanation:

To find the unit rate in miles per hour, we need to convert the given information into the same units. Jon travels 1/2 mile in 1/4 hour, so we can simplify the fraction to 2/4, which is equal to 1/2. This means Jon travels 1/2 mile every 1/4 hour. To find the unit rate, we divide the distance (1/2 mile) by the time (1/4 hour).

1/2 mile ÷ 1/4 hour = 2 miles per hour

Therefore, the unit rate at which Jon travels is 2 miles per hour.

insert parentheses in the expression 4-5+2-6-11=6

Answers

Around 4-5 abd /2-6 message me in needed

Hemal wanted to make dessert for her family. The recipe made 8 servings, but she only wanted to make enough for 5 people. If the recipe for 8 servings called for 2 cups of flour, how much flour would she need for 5 servings?

Answers

If 8 servings called for 2 cups. 4 servings calls for 1 cup. Then you would need one more serving of 1/4. 
So the answers is: You would need 1 and 1/4 cups of water for 5 servings.

The soccer field at Mario's school has a area of 6,000 square miles.How can Mario show the area as a whole number multiplied by a power of ten

Answers

Well, there is multiple ways like:
600 x 10^1
60 x 10^2
6 x 10^3
.6 x ^4

The maximum weight for a truck on the New York State Thruway is 40 tons.How many pounds is not this

Answers

1 ton is 2000lbs. The max weight is 80000lbs.

the percent of increase is 16% if the new number is 522 find the original number

Answers

The original number is 438.48. Hope this helps!

Does the Commutative Property of Addition apply when you add two negative integer?

Answers

Yes because whether you flip two negative integers around, the answer would still remain the same since its addition.

For example:
-9+-3 = -12 = -3+-9
Yes
Hopefully this helps

Students are given 3 minutes for each multiple-choice question and 5 minutes for each free-response question on a test. There are 15 questions on the test, and students are given 51 minutes to take it.

The system of equations shown can be used to find the number of multiple-choice questions, m, and the number of free-response questions, f, on the test.

m + f = 15

3m + 5f = 51

How many multiple-choice questions are on the test?

Answers

m + f = 15....multiply by -5
3m + 5f = 51
-----------------
-5m - 5f = - 75 (result of multiplying by -5)
3m + 5f = 51
----------------add
-2m = - 24
m = -24/-2
m = 12 <=== 12 multiple choice questions

There are 12 number of multiple-choice questions are on the test.

What is an equation?

An equation is an expression that shows the relationship between two or more numbers and variables.

A mathematical equation is a statement with two equal sides and an equal sign in between.

Given that m, and the number of free-response questions, f, on the test.

m + f = 15.

Then multiply by -5

3m + 5f = 51

-----------------

-5m - 5f = - 75

3m + 5f = 51

Now add

-2m = - 24

m = -24/-2

m = 12

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math question down below

Answers

x + 4/5 = 11
x = 11 - 4/5
x = 55/5 - 4/5
x = 51/5 or 10 1/5

or u can do it this way..
x + 4/5 = 11.....multiply everything by common denominator of 5
5x + 4 = 55
5x = 55 - 4
5x = 51
x = 51/5 or 10 1/5

The day this lesson was written, the world population was 6,672,678,672. The population of the United States was 304,276,585. What is the population on the day you read this? Put “world population clock” into your search engine and see for yourself.

PS: I've already done it, the population as of 13 of September is 7,532,064,512

Write down the current date and the current world population. Use a calculator to figure out what percentage it has increased since the day this lesson was written. Use this formula:(current population - former population) / former population) x 100.

Answers

7,532,073,340 as of 9/13/17 at 7:18amest.

7532073340-6672678672=859394668/66726786720.12878*100 = 12.88%

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