Question

Which statement is true and represent the correct form of scientific notation

A. 5.3 x
`10^(-2)` = -0.053
B. 2 x
`10^(4)` < 20,000
C.-74.308 < -0.74 x
`10^(3)`
D. 12,000,000 = 1.2 x
`10^(7)`

Answer 1

Explanation:

let express them in the same form

5.3*1/100=0.053>-0.053 so A is false

2*10^4=2*10000=20,000 is equal to 20,000 so even B is false

-0.74*10^3=-0.74*1000=-740<-74.308 so even C is false

lets see D

1.2*10^7=12*10^6=12*1000000=12,000,000 which is equal to 12,000,000 so D is true