Answer:
<h2><em><u>m</u></em><em><u> </u></em><em><u>=</u></em><em><u> </u></em><em><u>6.43</u></em><em><u> </u></em><em><u>(</u></em><em><u>approx</u></em><em><u>. </u></em><em><u>)</u></em></h2>
Step-by-step explanation:
49 - 3m = 4m + 4
=> 49 - 4 = 4m + 3m
=> 45 = 7m
=> 6.428571... = m
=><em><u> m = 6.43 (approx. ) (Ans)</u></em>
Answer: The required lifetime value is 11.27.
Step-by-step explanation:
Since we have given that
Mean value = 11 hours
Standard deviation = 1 hour
The total lifetime of all batteries in a package exceeds that value for only 5% of all packages.
So, α = 0.95, z= 1.645
n = 9
So, the lifetime value would be
Hence, the required lifetime value is 11.27.
Answer:
61 36/49
Step-by-step explanation:
I took a test with that question. my answer was right
So it would be $8.65/ 5lbs. And divide the top and the bottom by 5 and you get $1.73/ 1 lbs. I hope this helps!
you can reason this concretely.
suppose you start with 60 bugs.
1/5 of the 60 bugs is 12 bugs
divide 12 bugs into 3 equal groups. each group has 12/3 = 4 bugs.
the fraction now is 4/60
in lowest terms this is 1/15