Answer: about 1 year
Step-by-step explanation:
Given : The time is takes to build a skyscraper is proportional to its height and inversely proportional to the number of construction workers.
Let T be the time and N be the number of works and H be the height.
Then, 
Substitute the values , 
and 
, we get
Hence, it will take about 1 year for 80 workers to build a 60 story building .
Answer: I think its D
Step-by-step explanation:
Answer:
C. (-2, -2)
Step-by-step explanation:
The equation Y = X states that for every time X is increased or decreased in value, Y also decreases. Essentially, Y is always equal to X. This gives the line a Y intercept of zero, (which means the first point is [0, 0]) and has a slope of 1. Given this, we can check which points match this.
A: -1 does not equal three, so A is false.
B: 2 does not equal 6, so B is false.
C: -2 equals -2, so this is true.
D: 2 does not equal 4, so this is false.
I hope this helped!
Answer:
Solve what? there's nothing there.
