Answer: C. 541.60 hours
Step-by-step explanation:
Since the lifetime of a 2-volt non-rechargeable battery in constant use has a normal distribution, we would apply the formula for normal distribution which is expressed as
z = (x - µ)/σ
Where
x = lifetime of the batteries.
µ = mean lifetime
σ = standard deviation
From the information given,
µ = 516 hours
σ = 20 hours
Looking at the normal distribution table, the z score corresponding to ninety percent approximately is 1.28
Therefore,
1.28 = (x - 516)/20
Cross multiplying by 20, it becomes
20 × 1.28 = x - 516
25.6 = x - 516
x = 516 + 25.6
x = 541.6
Therefore, Ninety percent of all batteries have a lifetime less than
541.60 hours
Answer:
It can't fit.
Step-by-step explanation:
If it has a right angle then c^2 = a^2 + b^2 where c = the longest side.
c^2 = 9^2 = 81
a^2 + b^2 = 6^2 + 8^2 = 100
- so It cant have a right angle.
Answer:
9x-27
Step-by-step explanation:
x(9)-3(9)--->distributive property
Answer: 
Step-by-step explanation:
The area of a parallelogram can be calculated with the following formula:
Where "b" is the length of any base of the parallelogram and "h" is the height.
In this case you can identify in the figure provided in the exercise, that:
Then, knowing those values, you can substitute them into the formula shown above, as below:
Finally, you must evaluate in order to find the area of the given parallelogram.
You get the following result:
Positive infinity is going after three hope this helps
