Answer:

Step-by-step explanation:
<h2><u>Lesson : Reducing by factors:</u></h2><h2><u /></h2>
Given :


When you have to reduce a number by a certain factor, you must divide the area with the amount that it is reducing from, therefore,


Answer:
90t-21t=69t
Step-by-step explanation:
4:00pm to 6:00 am is 14 hours. 14 x 1.5 is in fact 21 which means the temperature dropped 21 degrees in those 14 hours.
So scientific notation is making the number manageable.
scientific notation is
(a number >1 and <10) times 10^x
we count how many places the decimal has to move to make the number >1 and >10.
the answer is 6.
5.74 times 10^6

1) Since in the USA 8 x 10 ^9 messages are sent every month, that means that approximately 8 billion messages are sent.
2) We can Prime factorize it:
Note that on the right side we've picked only prime numbers. In this case, 2 and 5.
So we can rewrite 8 x 10^9 as prime factors.

3) Hence, the answer is:
Add 2 3/4 and 2 1/2 and you’ll get ur answer. area means total and when u see area, it means add