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statuscvo [17]
3 years ago
15

Time (minutes)

Mathematics
1 answer:
damaskus [11]3 years ago
4 0

Answer:    The extra-size chart

  • 5 basketball
  • 3 footballs
  • 5 running
  • 3 jogging
  • 4 jumping jacks
  • 5 sit up

Step-by-step explanation:

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Expand and simplify 2(a+3)+3(2a-1)
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=2a+6+6a-3
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7 0
3 years ago
Please answer correctly !!!! Will mark brainliest !!!!!!!!
nevsk [136]

Answer:

A

Step-by-step explanation:

Notice how it points it out for the x coordinate, and the closed circle means that point is included, So it's the range of the smallest x coordinate to the greatest x coordinate.

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3 years ago
Give the locations of the 2 mountain ranges
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5 0
3 years ago
"How much do students pay, on average, for textbooks during the first semester in college? From a random sample of 400 students
dezoksy [38]

Answer: The margin of error = 3.71, confidence interval = (354.04, 361.46) and it means that mean cost is lies within the confidence interval.

Step-by-step explanation:

Since we have given that

Sample size = 400

Mean = $357.75

Standard deviation = $37.89

At 95% confidence level, z = 1.96

We first find the margin of error.

Margin of error is given by

z\times \dfrac{\sigma}{\sqrt{n}}\\\\=1.96\times \dfrac{37.89}{\sqrt{400}}\\\\=3.71

95% confidence interval would be

\bar{x}\pm \text{margin of error}\\\\=357.75\pm 3.71\\\\=(357.75-3.71,357.75+3.71)\\\\=(354.04,361.46)

Hence, the margin of error = 3.71, confidence interval = (354.04, 361.46) and it means that mean cost is lies within the confidence interval.

7 0
3 years ago
Find the percent change. Tell whether it is a percent increase or decrease.
timurjin [86]
It would probably be A
5 0
2 years ago
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