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Alexxandr [17]
3 years ago
6

X+y-3z=8 Slove for x

Mathematics
2 answers:
vredina [299]3 years ago
8 0

x+y-3z=8\\x=-y+3z+8

bagirrra123 [75]3 years ago
7 0
ANSWER:

x= −y + 3z +8
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A test is used to assess readiness for college. In a recent​ year, the mean test score was 20.3 and the standard deviation was 4
Vlada [557]

Answer:

\mu = 20.3

\sigma = 4.9

And we can find the limits in order to consider values as significantly low and high like this:

Low\leq \mu -2 \sigma= 20.3- 2*4.9 = 10.5

High\geq \mu +2 \sigma= 20.3+ 2*4.9 = 30.1

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

Solution to the problem

For this case we can consider a value to be significantly low if we have that the z  score is lower or equal to - 2 and we can consider a value to be significantly high if its z score is  higher tor equal to 2.

For this case we have the mean and the deviation given:

\mu = 20.3

\sigma = 4.9

And we can find the limits in order to consider values as significantly low and high like this:

Low \leq \mu -2 \sigma= 20.3- 2*4.9 = 10.5

High\geq \mu +2 \sigma= 20.3+ 2*4.9 = 30.1

6 0
3 years ago
If you know how to solve this, Please answer it. Thank You
Mkey [24]

The answer is in the picture. Click on it.

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3 years ago
A rectangular park 40 yards wide was redesigned, and a path 1 yard wide was built around it. How long was the park before if, af
forsale [732]

Answer:

98 yards

Step-by-step explanation:

The new width is 40 yds + 2 yds = 42 yds.

Area = L × W

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L = 4200 yds ÷ 42 yds = 100 yds

The new length is 100 yds.

The old length = the new length - the width of the path × 2 = 100 yds - 1 yd × 2 = 100 yds - 2 yds = 98 yds.

The length of the park was 98 yds, before the path was built.

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3 years ago
Is (2, 10) a solution to the inequality y>4×+1?​
OLEGan [10]

Answer:

yes

Step-by-step explanation:

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3 years ago
Please answer need fast
agasfer [191]

Answer:

B is the correct ans

please mark brainliest

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2 years ago
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