<h2>A can complete the work in 7*6 hrs = 42 hrs.
</h2><h2>
</h2><h2>A can complete in 1 hr = 1/42 part.
</h2><h2>
</h2><h2>B can complete the work in 7*8 hr = 56 hrs.
</h2><h2>
</h2><h2>A&B together do in 1 hr = 1/42 + 1/56 = 7/168 = 1/24 part. So they will do in 8 hrs = 8*1/24 = 1/3 part.
</h2><h2>
</h2><h2>Hence they need 1÷1/3 = 3 days to complete the work.</h2>
Answer:
B
Step-by-step explanation:
-8/2=-4=x
8/2=4=y
Scale : 1 cm = 2.5 ft
1 cm = 2.5 ft
0.5 cm = 2.5 x 0.5 = 1.25 ft
Circumference = πD = π(1.25) = 3.93 ft
Answer: 3.93 ft
Answer:
is neither significantly low nor significantly high.
Step-by-step explanation:
From the information given, we know that:
The mean is 
and the standard deviation is 
.
The range rule of thumb says that:
Applying these definitions, we get that
We note that is between 
and 
, which indicates is neither significantly low nor significantly high.
Answer:
ummm
Step-by-step explanation:
