Which of the following expressions is not correctly written in scientific notation?

a.1 × 10 4
b.9 × 10 2
c.10 × 10 7
d.5 × 10 3

a. 1 × 10 4

Step-by-step explanation:

Anything's answer when multiplied by 1 is always the number given itself. So, there is no need to write "1 ×"

the correct answer is b) histograms can be used to exhibit the shape of distributions. this is because histograms count the frequency of each possible answer, so one is able to see which results are more common and which are less common.

answer: sorry i can't you.

step-by-step explanation: