## Tuesday, November 9, 2010

### Darnell's 2 IN 1 BLOG POST ?!

HELLO CLASS.
I'm going to put in a blog post that i was suppose to do into this blog post!
So it makes 2 blog posts in 1! I think..

Here we go.
First question.
# 27 The mean of 6 rational numbers is -4.3
a) What is the sum of the ration numbers?
-4.3
x 6 numbers
--------------------
- 25.8

b) If five numbers equal -4.5 what is the sixth number?
-4.5
x 5 numbers
--------------------
-22.5

So to equal -25.8 you must subtract -25.8 by -22.5 .
The answer you get is -3.3
To know its correct add -22.5 and -3.3 and you get -25.8

Second question.
a) The label on a 1-L can of paint states that the paint will cover an area of 10m2.
What is the side length of the largest area that the paint will cover.

So what you do here is try to find the side length of the largest area that the paint will cover.
A square will represent an area of 10m2.
To find the side length you find the square root of 10.
√10 = 3.16m

b) What is the side length of the largest square area that a 3.79-L can of the same paint will cover? Express your answer to the nearest hundredth of a meter.

What you do here is create a T chart. This will help from how big the can of paint
will cover.
A reason why you multiply by 3.79 is because of how big the can is which is 3.79L.

The answer you get for how big the can of paint can cover is 37.9m2.

Next you square root the number
√37.9 = 6.16m