Well, for method one the first step we have is distribution, then combining like terms, then property of subtraction, then division. For method two, I'm not entirely sure what they did there. I've never done math like that. Sorry I can't help you out all the way.
-TTL
To solve this, we first have to find an individual rate:
3/5
4/7
For the first one:
1 lap in 5/3 minutes
Second one:
1 lap in 7/4 minutes
find a common LCD
5/3 and 7/4
20/12 and 21/12
4 laps in 7 minutes is faster
The measure of angle one is equal to 60.75 degrees because angle 1 and 60.75 angle are corresponding, so they are congruent.
The measure of angle two is 119.25 degrees because it is supplementary to angle 1.
Hope this helps! :)
12 is the 15% of 80
80 x 0.15 = 12
10.65/8.20= 1.30
1.30-1 ( for the 100% that was there)
.30 x100 (to get in percent)= 30 percent increase
