Answer:
About 5 hr 10 min
Step-by-step explanation:
rate 1 = 1 pool / 9 hrs rate 2 = 1 pool / 12 hours
now find the time with both rates combined
1 pool / ( 1/9 + 1/12) = 1/ (7/36) = 36/7 hr = 5 1/7 hr = 5 hr 8.6 min
Answer:
1
Step-by-step explanation:
all you do is multiple then devide
Where is the graph? Can’t help without it
Answer:

Step-by-step explanation:
-The total number of outcomes is 4.
-Given that the outcomes occur with the same frequency.
-Therefore they all occur with the same frequency, 1/4=0.25

-The probability distribution for the duration of a service call is attached.
Answer:
300 cm
Step-by-step explanation:
20 cm times 20 cm for the area of the whole rectangle.
Then you do 10 cm times 10 cm for the area of the inner rectangle.
Lastly you subtract the area of the inner rectangles from the whole rectangle itself to get 300 cm which is the area of the shaded region.
If you can please give me brainliest that would be much appreciated, Thanks!