The question reminds you of all the tools you need:
It says ...
"Opposite angles are equal."
So the upper right angle is x+40 just like the bottom left,
and the bottom right angle is 3x+20 just like the upper left.
And it says ...
"The sum of all angles is 360°."
You know what each of the four angles is, so you can addum all up,
set the sum equal to 360, find out what number ' x ' is, and then
use that to find the size of every angle.
To find out how much she spent during the second month, all we have to do is subtract $305.43 and $213.20
$305.43 - $213.20 = $92.23
Therefore she spent $92.23 during the second month
Hope this helps
Can u take a picture please?
Answer:
1.ABC is equilateral triangle because all sides are equal
3.because they are the joined figure of a triangle
