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3 years ago

HALP. First answer brainliest

Mathematics

2 answers:

Rom4ik [11]3 years ago

8 0

Answer:

5.68

Step-by-step explanation:

it is 5.67812

I just rounded the answer like is says to

Lostsunrise [7]3 years ago

7 0

Answer = 5.68

hope this helps

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To test μ for an x distribution that is mound-shaped using sample size n ≥ 30, how do you decide whether to use the normal or st

Luden [163]

Answer:
Use the normal distribution if the population standard deviation is known.
Use the student's t distribution when the population standard deviation is unknown.

Explanation:
A mound-shaped distribution refers to the normal distribution.
A good sample size for testing against the normal distribution should be
n >= 30.
The condition for the sample size is satisfied.
However, we are not given the population standard deviation, therefore it is assumed to be unknown.
Therefore the student's t distribution should be used.

6 0

3 years ago

Find the value of x in 2x+20=3x-8

Savatey [412]

Answer:

X=28

Step-by-step explanation:

3x-8=2x+20. So x=28

8 0

3 years ago

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The sum of the digits of a two digit number is seven the tens digit is one more than twice the units digit find the number

xenn [34]

Answer: 52

Explanation:
5+2=7
5=2x2+1

5 0

3 years ago

PLEASE HELP ME 2x+45=90

arsen [322]

Answer:

x = 45/2 = 22.5 cm

Step-by-step explanation:

2x + 45 = 90

2x = 90- 45= 45

2x = 45

x = 45/2 = 22.5 cm

plz mark my answer as brainlist plzzzz.

hope this will be helpful to you .

if you find it useful.

8 0

3 years ago

Tristan's pen is 2/3 foot long. His pencil is 5/12 foot long. In feet , what is the conbined length of the pen and pencil

frosja888 [35]

The unsimplified answer is 40/12ft long.

8 0

2 years ago

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