The number 49 is decreased to 45. What is the percentage by which the number was decreased, to the nearest tenth of a percent?
1 answer:
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Hi!
When we write a number in scientific notation, we write it like this:
N ×
N = a number between one and 10
x = negative if the decimal is moved to the right. positive if moved to the left.
Okay, so we need to move the decimal in the number <span>0.0059 to the right to make it between one and 10.
0.0059
00.059
000.59
0005.9
5.9
N = 5.9
5.9 </span>×
Since we moved the decimal to the right 3 times,
x = -3
5.9 ×
^ the answer
Hope this helps! :)
When we write a number in scientific notation, we write it like this:
N ×
N = a number between one and 10
x = negative if the decimal is moved to the right. positive if moved to the left.
Okay, so we need to move the decimal in the number <span>0.0059 to the right to make it between one and 10.
0.0059
00.059
000.59
0005.9
5.9
N = 5.9
5.9 </span>×
Since we moved the decimal to the right 3 times,
x = -3
5.9 ×
^ the answer
Hope this helps! :)