Answer:
Correct option: (C) 83%.
Step-by-step explanation:
It is provided that the toxicity level of a lake is found by dividing the amount of dissolved toxins the lake water currently has per liter by the maximum safe amount of dissolved toxins that the water can hold per liter and then converting it to a percentage.
Denote the variables as follows:
<em>x</em> = amount of dissolved toxins the lake water currently has per liter
<em>y</em> = maximum safe amount of dissolved toxins that the water can hold per liter
The amount of dissolved toxins per liter of water in the river is, <em>x</em> = 0.86 mg/lt.
The maximum safe amount of dissolved toxins that the river water can hold is, <em>y</em> = 1.04 mg/lt.
Compute the toxicity level of the river water as follows:
Thus, the toxicity level of the river water is 83%.
The correct option is (C).
-10 / 2 3/4
-10 / 2.75
-3.6363 and so on.
Answer:
The area of a circle.
Step-by-step explanation:
Can I get brainiest please
Answer:
Step-by-step explanation:
Since the amount of soft drink dispensed into a cup is normally distributed, we would apply the formula for normal distribution which is expressed as
z = (x - µ)/σ
Where
x = amount in ounce of soft drink dispensed into cup.
µ = mean amount
σ = standard deviation
From the information given,
µ = 7.6oz
σ = 0.4 oz
a) The probability that the machine will overflow an 8-ounce cup is expressed as
P(x > 8) = 1 - P(x ≤ 8)
For x = 8,
z = (8 - 7.6)/0.4 = 1
Looking at the normal distribution table, the probability corresponding to the z score is 0.84
P(x ≤ 8) = 1 - 0.84 = 0.16
b) P(x< 8) = 0.84
c) when the machine has just been loaded with 848 cups, the number of cups expected to overflow when served is
0.16 × 848 = 136 cups