Set ? as x, and cross-multiply.
so x^2= 36
x = 6 or x = -6
-- It takes 10 workers 3 days to build 1 house.
so
-- It takes 10 workers 1 day to build 1/3 of a house.
so
-- It takes 1 worker 1 day to build 1/30 of a house.
You got 15 workers and you need 4 houses ?
Well, as we just calculated . . .
-- It takes 1 worker 1 day to build 1/30 of a house.
so
-- It takes 15 workers 1 day to build 15/30 = 1/2 of a house.
so
-- It takes 15 workers 2 days to build 1 whole house.
so
-- It takes 15 workers 8 days to build 4 houses.
Answer: (-x,y)
Step-by-Step Explanation:
In geometry, when a figure is reflected over particularly the y-axis, one coordinate will change.
The y coordinate will remain the same, not value wise. (positive in your case.)
Wherease the x coordinate will be the opposite additive inverse.
For example if you have (4,3) and it is reflected over the y-axis, the new coordinate will be (-4,y)
Hope this helps! :)
