Step-by-step explanation:
<5, 2> - <2, -3> = <5 - 2, 2 - (-3)> = <3, 5>
Answer:
99.1 is the 90th percentile of these scores.
Step-by-step explanation:
We are given the following information in the question:
Mean, μ = 85
Standard Deviation, σ = 11
We are given that the distribution of score is a bell shaped distribution that is a normal distribution.
Formula:
We have to find the value of x such that the probability is 0.90
Calculation the value from standard normal z table, we have,
Putting values, we get,
Thus, 99.1 is the 90th percentile of these scores.
Wait what’s the question?
If the ratio is 1:2 means that one is the double of the other, then if they shared 5 dozen, that is 5*12 = 60 total eggs, so we need two numbers that add to 60 and one is the double of the other, that is two equations just said, let the numbers by x, y:
x + y = 60
y = 2x
substitute:
x + 2x = 60
x = 20
substitute:
y = 2x = 2*20
y = 40
those are the numbers, they receive 20 and 40
Answer:
20 Yellow Counters
Step-by-step explanation:
You can see the clues with how the ratio changes.
To change from (1:4) => (5:1) is not because any were taken away from the value that is the Yellow counters, it is purely because the amount added to the blue counters was so large that they simply simplified the ratio.
The real value of the ratio if reverted back to it's original state would be:
=> (20:4)
95 blue counters is equivalent to 19 in the ratio. We know this because it increased from 1 to 20.
95/19 => 5
Each Ratio in the original one presented is equal to 5.
5 * 4 = 20 Yellow Counters