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vodomira [7]
3 years ago
5

Suppose a normal distribution has a mean of 26 and a standard deviation of 4. What is the probability that a data value is betwe

en 28 and 31? Round your answer to the nearest tenth of a percent?
Mathematics
1 answer:
lions [1.4K]3 years ago
7 0

Answer:

20.3%

Step-by-step explanation:

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Find the slope-intercept form of the equation that passes through the points (3, -4) and (1, 2)
quester [9]

Answer:

y = -3x + 5

Step-by-step explanation:

(y2-y1)/(x2-x1)

Plug coordinates into that

Then plug one of the coordinates into y = -3x+b to get b

3 0
2 years ago
FInd the length of a segment that has endpoints H(2,-3) and J(12,7)
N76 [4]

d =sqrt ((x2-x1)^2 +(y2-y1)^2)

sqrt((12-2)^2 +(7--3)^2)

sqrt(10^2+10^2)

sqt(100+100)

sqrt(200)

sqrt(100)sqrt(2)

10sqrt(2)

Choice B


5 0
3 years ago
The index number representing the price level changes from 109 to 113 in one year. The inflation rate during the year is _____ p
Dima020 [189]

First, get the difference between the price level changes.

113-109=4

Then, divide it by the initial price level, which is 109.

\frac{4}{109}=0.0367

Multiply by 100 to get its percent.

0.0367\times100=3.67

Thefore, the inflation rate during the year is 3.67 percent.

8 0
1 year ago
Consider a machine that exchange quarters for dollar bills. Inserting one dollar bill returns four quarters and you may insert u
Afina-wow [57]
No because it says you can only insert up to 5 Dollar Bills unless you put them in one at a time.
8 0
3 years ago
HELLPPPPP IDK WHAT TO DOOO
vesna_86 [32]

The formula can be written in the form ...

... T = (original temperature) + x·(change in temperature each minute)

The problem statement gives you the original temperature (21 °C) and tells you the temperature after 12 minutes. You have to use that information to figure out the change in temperature each minute.

The change in temperature in 12 minutes is (75 °C) - (21 °C) = 54 °C. That is the change in 12 minutes, so the change in 1 minute will be 1/12 of that:

... 54/12 = 4.5

Using this value in the equation for T, we have

... T = 21 + 4.5x

6 0
3 years ago
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