Question

(j)Compare 3.8 x (10)27 ;1.9 x(10)28​

Answer 1

Answer:

$1.9* 10^{28} > 3.8 * 10^{27}$

Step-by-step explanation:

$A = 3.8 * 10^{27} \\B = 1.9 * 10 * 10^{27}$

$B = 19 * 10^{27}$

∵ Both are multiplied by $10^{27}$

⇒ 19 > 3.8 [as they are multiplied by same number]

∴ $1.9* 10^{28} > 3.8 * 10^{27}$

Answer 2

Answer:

1.9 * (10)28 < 3.8 * (10)27

Step-by-step explanation:

First we make both the exponential numbers equal.

3.8 * 10 x (10)27     ;         1.9 * (10)28

3.8 * (10)28            ;          1.9 * (10)28

since, 3.8 is greater than 1.9 .

therefore, 1.9 * (10)28 < 3.8 * (10)27