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barxatty [35]
3 years ago
10

What is an equation in point-slope form of the line shown in the graph,using the point (-2,-1)

Mathematics
1 answer:
mylen [45]3 years ago
7 0
Y+1=[m(the slope)](x+2),  y=mx+2m-1, it is impossible to get the answer without the graph.
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Suppose the waiting times in an emergency room are normally distributed with a mean (mean) of 40 and a standard deviation (sigma
kipiarov [429]

Answer:

0.68269

Step-by-step explanation:

When we are to find the z score for population where a random sample is picked, the z.score formula we use is

z = (x-μ)/Standard error, where

x is the raw score,

μ is the population mean

Standard error = σ/√n

σ is the population standard deviation

n = random number of samples

For : x = 38 minutes, μ = 40, σ = 10, n = 5

z = 38 - 40/10 /√25

= -2/10/5

= -2/2

= -1

Determining the probability value using z table

P(x = 38) = P(z = -1)

= 0.15866

For : x = 42 minutes, μ = 40, σ = 10, n = 25

z = 42 - 40/10 /√25

= 2/10/5

= 2/2

= 1

Determining the probability value using z table

P(x = 42) = P(z = 1)

= 0.84134

The probability that their average waiting time will be between 38 and 42 minutes is calculated as

P(-Z<x<Z)

= P(-1 < x < 1)

= P(z = 1) - P(z = -1)

= 0.84134 - 0.15866

= 0.68269

Therefore, the probability that their average waiting time will be between 38 and 42 minutes is 0.68269

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3 years ago
Jacob earns £93.20 for 8 hours work. he gets the same amount of pay for each hour. what is his rate of pay per hour?
photoshop1234 [79]
The answer is 11.65!
5 0
3 years ago
What is 9 is 12% of which number???
ASHA 777 [7]
9 is 12% of 75 check it 9* 100 = 900 / 75 = 12
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3 years ago
BRAINLIEST PLUS 100 POINTS
nexus9112 [7]

See the attached picture for the answers:

4 0
2 years ago
• Paul has 5 pencils, each x inches in length. When she lines up the pencils end to end, they measure 34.5 inches. Select all th
IgorC [24]

Answer:

B and C

Step-by-step explanation:

Both of these equationa can be used to find the length of each pencil

6 0
3 years ago
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