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AleksAgata [21]
2 years ago
11

62.8 in scientific notation

Mathematics
1 answer:
bearhunter [10]2 years ago
8 0

Answer:

6.28 x 10²

Step-by-step explanation:

first number must be greater than or equal to 1 and less than 10

if you move the decimal to the left you need to increase the power of ten by one for each move

if you move the decimal to the rightt you need to decrease the power of ten by one for each move

You might be interested in
What is b1 and r of geometrical sequence if b3 −b1 = 16 and b5 −b3 = 144.
Naily [24]

Answer:

b1 = 2 ; r = 3

Step-by-step explanation:

Given that :

if b3 −b1 = 16 and b5 −b3 = 144.

For a geometric series :

Ist term = a

Second term = ar

3rd term = ar^2

4th term = ar^3

5th term = ar^4 ;...

If b3 - b1 = 16;

ar^2 - a = 16

a(r^2 - 1) = 16 - - - (1)

b5 - b3 = 144

ar^4 - ar^2 = 144

ar^2(r^2 - 1) = 144 - - - - (2)

Divide (1) by (2)

a(r^2 - 1) / ar^2(r^2 - 1) = 16 /144

a / ar^2 = 1 / 9

ar^2 = 9a

Substitute for a in ar^2 - a = 16

9a - a = 16

8a = 16

a = 2

From ar^2 - a = 16

2r^2 - 2 = 16

2r^2 = 16 + 2

2r^2 = 18

r^2 = 18 / 2

r^2 = 9

r = √9

r = 3

Hence ;

a = b1 = 2 ; r = 3

7 0
3 years ago
Eddie has a globe that he is going to unfold and lay flat to hang on the wall as a map. If the radius of the globe is 22.5 cm, w
nirvana33 [79]

Answer:

B. 6358.5 square centimeters. This is right.

5 0
3 years ago
Ann ran a 5 kilometer race in 45 minutes. Write an inequality
guapka [62]

Answer:

ghgyeryeughheyyrgjehrgb ehgryeurghekdrdrg dhgidrg

6 0
3 years ago
An experimenter is randomly sampling 4 objects in order from among 43 objects. What is the total number of samples in the sample
Ivenika [448]

Answer:

10.75

Step-by-step explanation:

First you see how many times 4 can go into 4 in the tens place which is 1 .You multiply 4 times 1and you get 4 .Then you minus 4 from 4 and get

Then you bring down the 3 and see how many times 4 can go into 3 which is 0 .So you put a decimal point and bring down a 0.

See how many times 4 can go into 30,which will be 7 times.After , you multiply 7 times 4 and you get 28.Subtract 29 from 30 and you get 20.You bring down the 0 .

See how many times 4 can go into 20 which is 5.Mutiply 5 times 4 and get 20 then subtract 20 from 20.

Get a final quotient of 10.75.

4 0
3 years ago
Someone help asap please.
Lerok [7]
<h2>Repeating Decimal to Fraction</h2>

Note: "..." is the repeating sign I'm using.

Answer: 2/9

<h3>Steps</h3>

Let X equal the decimal number  

Equation 1:

X = 0.2...

With 1 digit in the repeating decimal group,

create a second equation by multiplying

both sides by 10

X * 10 = 10X and 0.2...* 10 = 2.2...

Equation 2:

10X = 2.2...

Subtract equation 1 from equation 2

10X = 2.2...  -   X = 0.2...

We get

9X = 2

In conclusion, 0.2... =   2/9

<h2>Repeating Decimal to Mixed Number</h2>

This decimal cannot be a mixed number because it has no number in the one's, ten's, or hundred's place.

6 0
3 years ago
Read 2 more answers
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