Answer:

Step-by-step explanation:
Set up an equation and solve for r using the formula for slope:

Answer:
293 feet.
Step-by-step explanation:
Their track is 500 feet, and there are three sections. Add these sections(61+83+63=207) and subtract from the total(500-207=293)
Answer:
331.25
Step-by-step explanation:
First you want to find how much each class cost. So first you want to divide $198.75 by 15 and you will get 13.25. Once you do that you will multiply 13.25 by 25 to get 331.25. Your welcome.
Answer:
Step-by-step explanation:
-3√2+3√8
=-3√2+3×2√2
=-3√2+6√2
=3√2
20
This is because
2x+(6x+20)=180
8x+20=180
8x=160
8x/8=160/8
X=20