Sadie bought some shares in December 2010 In 2011 the value of the shares decreased by 10% In 2012 the value of the shares increased by 20% By what percentage did the value of the shares increase in the two years from the end of 2010 to the end of 2012?

The shares increased by 8%

Step-by-step explanation:

Here, we want to calculate the percentage increase in the value of the shares

Let the original value of the shares bought be $x

It decreased by 10%

Mathematically,

that will be x - (10% of x)

= x -0.1x = 0.9x

This is the new value

It increased at this point by 20%

The new value will be;;

0.9x + (20% of 0.9x)

0.9x + 0.18x

= 1.08x

The percentage increase in the shares will be;

(1.08x - x)/x * 100%

= 0.08x/x * 100% = 8%

a

step-by-step explanation:

when a number is between two straight lines it means the absolute value.

to find absolute value you need to know how many numbers is that number away from 0.

when finding absolute value the number will always come out positive

so absolute value of -3 is 3

absolute value of 3/2 is 3/2

absolute value of -2 is 2

absolute value of 3.5 is 3.5

absolute value of -1 is 1

now put these numbers in order:

a)   |-1|, |3/2|, |-2|, |-3|, |3.5|

at least two

step-by-step explanation: