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Reika [66]
3 years ago
9

A line contains the points (82, −96) and (87, −86).

Mathematics
1 answer:
Sauron [17]3 years ago
5 0

Answer:

The slope is 2.

Step-by-step explanation:

ΔX = X2 - X1 = 87 - 82 = 5

ΔY = Y2 - Y1 = -86 - (-96) = -86 + 96 = 10

ΔY/ΔX = 10/5 = 2/1 = 2

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Work out, giving your answer as a mixed number:<br><br> 4 2/3 + 1 3/4
Mumz [18]

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6 0
4 years ago
A 90% confidence interval is centered at a _____ and is 90% sure to contain the _______.
forsale [732]

Answer:

See below

Step-by-step explanation:

A 90% confidence interval is centered at a parameter and is 90% sure to contain the statistic.

When you are running a statistical test, you can create a confidence interval centered at the appropriate parameter (such as the mean) to see if the statistic stated in your null hypothesis is true if it's contained in the interval. Whatever the confidence level is determines how wide the interval will be, and as such, will determine how likely the interval will catch the statistic in question.

3 0
2 years ago
in a poll about work, 62% of respondents said that their jobs were sometimes or always stressful. twelve workers are chosen at r
Sladkaya [172]

The mean and standard deviation of number who find their jobs stressful are 7.44 and 1.6814 respectively.

Given,

number of workers chosen , n=12

percentage of respondents =62%

from given data the calculation are done according to binomial distribution,

then,

probability of respondents ,p=\frac{62}{100}=0.62

a)calculating mean,

\mu=n*p\\\\\mu=12*0.62\\\\\mu=7.44

b)calculating standard deviation,

\sigma=\sqrt{n*p*(1-p)}\\\\\sigma=\sqrt{12*0.62*(1-0.62)}\\\\\sigma=\sqrt{7.44(0.38)}\\\\\sigma=\sqrt{2.8272}\\\\\sigma=1.6814

Thus, the mean and standard deviation of number who find their jobs stressful are 7.44 and 1.6814 respectively.

To learn more about binomial distribution refer here

brainly.com/question/15303817

#SPJ4

8 0
1 year ago
Building A is 255 meters taller than building B. If the height of building A is subtracted from twice the height of building B,
garri49 [273]

Answer:

A = 744 meters    B = 489 meters

Step-by-step explanation:

A = B + 255

2B - A = 234

-2B          -2B         Subract the -2B from both sides

-A = -2B + 234

A = 2B - 234          Divide by -1 to get A alone

B + 255 =  2B - 234   Set both equations equal to each other

- B              -B

255 = B - 234

+234      +234

489 = B

Plug 234 in for B in the original equations

A = 489 + 255

A = 744

8 0
3 years ago
Simplify: (3x - 5)(x2 6).
a_sh-v [17]
5+3=8=x 3x8-5=19x2 6=152
5 0
3 years ago
Read 2 more answers
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