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Novay_Z [31]
3 years ago
15

Determine the correct scientific notation form of the number.

Mathematics
2 answers:
ankoles [38]3 years ago
6 0

Hi There!

Eliminate C and D because when you are putting numbers into scientific notation the number can not be greater than 10.

8.4 x 10^-7 is the same as dividing 8.4 by 10 seven times which equals 0.00000084 which is not equal to the decimal form given in the question.

8.4 x 10^-8 = 0.000000084

Answer: B) 8.4 x 10−8

Hope This Helps :)

Dahasolnce [82]3 years ago
3 0

0.000000084

we need to move the decimal 8 places to the right

8.4* 10^-8

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place an x in the table to show the precent decrease from the first number to the second number. giving brainliest!!
dezoksy [38]

Answer:

150 to 117 is 25%

340 to 255 is 25%

450 to 351 is 22%

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
The inequality -15<-6 is given. Write the inequality you get when you perform the following operation:
Anna35 [415]

Step-by-step explanation:

strange, because the way you typed it, it would be absolutely correct.

If a < b and if c is a positive number, then

a/c < b/c

Dividing each side of an inequality by a positive number does not change the direction of the inequality symbol.

that is one of the defined rules.

so, did you make a mistake with a sign ? maybe the division is meant to be by -3 ?

then indeed, suddenly

5 > 2

so, please check the problem definition precisely. if your correct answer is actually wrong, then the original problem must be different than what you typed here.

8 0
3 years ago
No clue how to do this
andreev551 [17]

B is your awnser! sorry if im wrong my calc shows its without a  - symbol

7 0
3 years ago
9) What 2 numbers have a total of 28 and a difference of 6?<br>​
Vedmedyk [2.9K]

Answer:

Sum: 17 + 11 = 28

Difference: 17 - 11 = 6

Step-by-step explanation:

The sum of x and y is 28. In other words, x plus y equals 28 and can be written as equation A:

x + y = 28

The difference between x and y is 6. In other words, x minus y equals 6 and can be written as equation B:

x - y = 6

Now solve equation B for x to get the revised equation B:

x - y = 6

x = 6 + y

Then substitute x in equation A from the revised equation B and then solve for y:

x + y = 28

6 + y + y = 28

6 + 2y = 28

2y = 22

y = 11

Now we know y is 11. Which means that we can substitute y for 11 in equation A and solve for x:

x + y = 28

x + 11 = 28

X = 17

Summary: The sum of two numbers is 28 and their difference is 6. What are the two numbers? Answer: 17 and 11 as proven here:

Sum: 17 + 11 = 28

Difference: 17 - 11 = 6

8 0
3 years ago
Read 2 more answers
Help! Show your work too plz
miss Akunina [59]
A) 8 seconds hope this work :)
8 0
3 years ago
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