3 years ago

Help with these two please or one??

1 answer:

8 0

<span>Anna learns in her science class that the human eye blinks an average of 4,200,000 times a year. What is this number expressed in scientific notation?</span>

You might be interested in

Evaluate the statistics expression:39C1

Aleksandr-060686 [28]

<h3>Answer: 39</h3>

========================================================

Explanation:

You can use the nCr formula shown below

$_n C _r = \frac{n!}{r!*(n-r)!}$

where n = 39 and r = 1. However, you could also use the identity

$_n C _{1} = n$

which basically says there are n ways to pick 1 item if you are given a choice of n items. In this specific case, we have 39 items total, and there are 39 ways to pick one item.

4 0

3 years ago

WHAT IS 6.5% AS A DECIMAL?

Ksju [112]

$p\%=\dfrac{p}{100}\\\\6.5\%=\dfrac{6.5}{100}=0.065$