A sled dog racer completed a race in 6 hours. Because of changes in the terrain, his average speed for the last 48 miles was twice as fast as his average speed for the first 12 miles. Which equation can be used to find r, his average speed in miles per hour, during the first 12 miles?
24 cups pineapple
<span>48 cups orange juice </span>
<span>72 cups seltzer
I hope this helps :D</span>
Answer:
Step-by-step explanation:
Given
Required
This is calculated as the number of women divided by the population of the class
i.e.
So, we have:
Step-by-step explanation:
That is what your line should look like :)
That's Intersecting Secants, and we get
EC × ED = EB × EA
(x+4)(x+4+1) = (x+1)(x+1+11)
(x+4)(x+5) = (x+1)(x+12)
x^2 + 9x + 20 = x^2 + 13x + 12
8 = 4 x
x = 2
Check: 3(14)=42 6(7)=42 good
Answer: 2
