Step-by-step explanation:
When rotating a point 90 degrees counterclockwise about the origin our point A(x,y) becomes A'(-y,x). In other words, switch x and y and make y negative
4.5 quarts per minute is 1.125 gallons per minute using the quarts-to-gallons conversion ratio. 1.125 gallons per minute is equal to .01875 when divided by 60, so we have .01875 gallons per hour.
All you have to do is put 36/125. This will get you .288. When rounded to the nearest percent, it is 28%.
Answer:
Step-by-step explanation:
hello :
r+b=7... (*)
3.75r+2.75b=22.25.... (**)
use (*) : r = 7 - b
put this value in (**) :
3.75(7 - b)+2.75b = 22.25
26.25 -375b +2.75b = 22.5
-375b +2.75b = 22.5 - 26.25
- b = -3.75
so : b = 3.75
but : r = 7 - b
r = 7 - 3.75
r = 3.25
Answer:
16/15
Step-by-step explanation:
