It's a segment that connects the midpoints of two points in a triangle. I guess that was explained in the answer....?
Sorry if that didn't help. :))
3 minutes.
is the right answer
Based on the data, the most likely correlation coefficient would be -1.
The slope between 20 and 30 days is -1, and it represents the change in the surface area of the lake per day.
The data represents correlation, not causation.
Since the data would form a perfectly straight line through the points, the correlation coefficient would be -1 for a perfect decreasing fit.
To find the slope, find the change in the surface area between those days, the change in the days, and write it as surface area/days: 80-90=-10; 30-20=10; -10/10=-1
This is not causation because there could be lurking variables we cannot see.
9514 1404 393
Answer:
20 pounds
Step-by-step explanation:
Often, mixture problems are worked by writing two equations: one for the total quantity of constituents in the mix, and one for the total price of the mix. When these equations are solved by substitution, the first step is to write one quantity in terms of the other.
You can save an equation and a step by using one variable for quantity. It usually works best to let the variable represent the highest-cost (or most concentrated) contributor. Here, that is the quantity the problem asks for, so ...
Let c represent the number of pounds of cashews needed to be mixed with the peanuts. Then the revenue from selling the mix is ...
80($1.50) +c($4.00) = (80+c)($2.00)
120 +4c = 160 +2c . . . . . divide by $, simplify
2c = 40 . . . . . . . . . . . . . subtract 120+2c from both sides
c = 20 . . . . . . . . . . . . . divide by 2
The manager should mix 20 pounds of cashews with the 80 pounds of peanuts.