Answer:
10
Step-by-step explanation:
If ABCD is a rectangle, then AB=CD and AC=BD.
- AC=BD, so x+6=2x-4
- Subtract, -x+6=-4
- Subtract, -x=-10
- Make positive, x=10
Check work:
- 10+6=2(10)-4
- 10+6=20-4
- 16=16
We're down 125*5 (for 5 days), so we subtract that to start it off. Next, he gets 12 dollars per every wind chime, and we can write every wind chime sold as x to get -625+12x. Next, we need that to equal 3500, so we get -625+12x=3500. Adding 650 to both sides, we get 4125=12x. After that, we divide both sides by 12 to get 4125/12=x
Hello there.
Linear regression is a useful tool that allows calculating approximate values for a function that passes through given points(with the best error possible). It is very useful in science to make an estimation of the comportment of movement, electricity and some decays.
For example, I will relate a case in a physics lab: We calculated the positions of a car in an air rail and the times. With this information, I was able to make a linear regression to calculate the Position function for that case.
