Answer:
1780 is the best answer
Step-by-step explanation:
PLEASE MARK ME BRAINLIEST IF MY ANSWER IS CORRECT PLEASE let
The correct answer is option 4: ![(8.\frac{1}{4}).\frac{3}{5}](https://tex.z-dn.net/?f=%288.%5Cfrac%7B1%7D%7B4%7D%29.%5Cfrac%7B3%7D%7B5%7D)
Step-by-step explanation:
Given expression is:
![8.(\frac{1}{4}.\frac{3}{5})](https://tex.z-dn.net/?f=8.%28%5Cfrac%7B1%7D%7B4%7D.%5Cfrac%7B3%7D%7B5%7D%29)
The associative property states that for any three terms that are being multiplied, different order of multiplication (i.e. which two terms are multiplied first) will give the same answer.
Let a,b and c be the three terms
then
![a.(b.c) = (a.b).c](https://tex.z-dn.net/?f=a.%28b.c%29%20%3D%20%28a.b%29.c)
So applying the associative property on given expression
![8.(\frac{1}{4}.\frac{3}{5}) = (8.\frac{1}{4}).\frac{3}{5}](https://tex.z-dn.net/?f=8.%28%5Cfrac%7B1%7D%7B4%7D.%5Cfrac%7B3%7D%7B5%7D%29%20%3D%20%288.%5Cfrac%7B1%7D%7B4%7D%29.%5Cfrac%7B3%7D%7B5%7D)
Hence,
The correct answer is option 4: ![(8.\frac{1}{4}).\frac{3}{5}](https://tex.z-dn.net/?f=%288.%5Cfrac%7B1%7D%7B4%7D%29.%5Cfrac%7B3%7D%7B5%7D)
Keywords: Associative property, Properties
Learn more about associative property at:
#learnwithBrainly
A fair coin just means 50% heads 50% tails. so the sample is still 50% heads 50% tails.
Answer:
7.5
Step-by-step explanation:
The relation between time, speed, and distance is ...
time = distance/speed
If distance is "1 round trip", then the time going is ...
going = 0.5/(10 mi/h) . . . . for 1/2 round trip
and the time coming is ...
coming = 0.5/(6 mi/h)
Then the average speed for the full round trip is ...
speed = distance/time
average speed = 1/(going + coming) = 1/(0.5/10 +0.5/6) mi/h
= 1/((3+5)/60) mi/h
= 60/8 mi/h = 7.5 mi/h
Jack's average speed for the round trip was 7.5 mph.