Asked by Tessa

A human red blood cell is about 0.000008 meters in diameter which of the following represents this number in scientific notation

-6
A. 0.8 x10
-6
B . 8.0 x 10
6
C. 0.8 x 10
6
D. 8.0 x 10


MR loya stayed that the circumference of earth at the equator is 24,902.4 miles which expression represents this number in scientific notation
4
A . 2.49024 x 10
4
B. 24,9024 X. 10
4
C. 249,024 X 10
5
D. 2.49024 x 10



Answered by Steve
You need to shift the decimal point until the leading number (x) is 1 <= x < 10

Shift left: lower the power of 10
Shift right: raise the power of 10

0.000008
0.00008 * 10^-1
0.0008 * 10^-2
...
8.0 * 10^-6

24,902.4
24,90.24 * 10^1
...
2.49024 * 10^4
Answered by Tessa
Oh ok thank you Steve
Answered by Steve
sorry - I got the shift exactly backwards!

But I guess you figured that out...
Answered by tessa
yeah its ok lol i got it
Answered by janiya
idk
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