The square root of 98 is 9.899<span> so I think if it was rounded to the nearest tenth it would be 9.9</span>
Answer:
18h - 3hk
Step-by-step explanation:
3h(6 - k)
= 3h(6) + 3h(-k)
= 18h + -3hk
= <u>18h - 3hk</u>
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:
Cool kick studio is cheaper unless you are going to take more than 12 lessons. They are equal in price when you take 12 lessons.
Answer:
70%
Step-by-step explanation:
=10.50/35.00%
=30%
Joline bought the skirt by paying 30% of the original value.
=100%-30%
=70%
Joline gets a discount of 70%.
