Question

The distance of planet Jupiter from Earth is approximately 6.3 ⋅ 108 kilometers, and the distance of planet Saturn from Earth is 1.2 ⋅ 109 kilometers. About how many more kilometers is the distance of Saturn from Earth than the distance of Jupiter from Earth? 5.1 ⋅ 101 5.1 ⋅ 108 5.7 ⋅ 107 5.7 ⋅ 108

Answer 1

Answer:

The correct option is D) $5.7 \times 10^8$

Step-by-step explanation:

Consider the provided information.

The distance of planet Jupiter from Earth is approximately $6.3 \times 10^8$ kilometers.

The distance of planet Saturn from Earth is $1.2 \times 10^9$ kilometers.

Add or subtract scientific number:

It is necessary to manipulate two numbers in the scientific notation so that their bases have the same exponent.

Consider the provided numbers $6.3 \times 10^8$ and  $1.2 \times 10^9$

The number $1.2 \times 10^9$  can be written as $12 \times 10^8$

Now the exponent of the both numbers are same, so simply subtract the numbers as shown:

$(12-6.3) \times 10^8$

$5.7 \times 10^8$

Hence, the correct option is D) $5.7 \times 10^8$

Answer 2

1.2*10^9 is the same as 12*10^8. 12-6.3 is 5.7, then you add the 10^8 part, therefore the answer is 5.7*10^8