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grigory [225]
3 years ago
6

The scatter plot shows a​ hiker's elevation above sea level during a hike from the base to the top of a mountain. The equation o

f a trend line for the​ hiker's elevation is y=7.52x​+649, where x represents the number of minutes and y represents the​ hiker's elevation in feet. Use the equation of the trend line to estimate the​ hiker's elevation after 170 minutes.
After 170 ​minutes, the​ hiker's elevation will be about _____ feet above sea level.

Mathematics
1 answer:
irakobra [83]3 years ago
4 0

Answer:

2232 for 170 minutes

Step-by-step explanation:

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puteri [66]

Answer:

y=3x-2

Step-by-step explanation:

your question didn't have any instructions so this might not be what you're looking for

set them equal to each other

-3x+4=3x-2

-3x-3x=-2-4

-6x=-6

x=1

plug in x=1

y=3(1)+4   =7

y=3(1)-2   =1

so, when x=1, y=1 in the expression y=3x-2

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3 years ago
Calculators cannot display repeating decimals. Calculators always round.
andriy [413]

Answer:

1. 0.333 No

2. 0.3 or 0.300 Yes

3. 0.667 No

Step-by-step explanation:

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3 years ago
What is the answer to 10=4a
Archy [21]

Answer:

5/2

Step-by-step explanation:

divide both sides by 4

3 0
3 years ago
2. P337. 23. A large box contains 10,000 ball bearings. A random sample of 120 is chosen. The sample mean diameter is 10 mm, and
Rashid [163]

Answer:

B is True

A, C. D are false

Step-by-step explanation:

Given :

Sample size, n = 120

Mean diameter, m = 10

Standard deviation, s = 0.24

Confidence level, Zcritical ; Z0.05/2 = Z0.025 = 1.96

The confidence interval represents how the true mean value compares to a set of values around the mean computed from a set of sample drawn from the population.

The population here is N = 10000

To obtain

Confidence interval (C. I) :

Mean ± margin of error

Margin of Error = Zcritical * s/sqrt(n)

Margin of Error = 1.96 * 0.24/sqrt(120)

Confidence interval for the 10,000 ball bearing :

10 ± 1.96 * (0.24) / sqrt(120)

Hence. The confidence interval defined as :

10 ± 1.96 * (0.24) / sqrt(120) is the 95% confidence interval for the mean diameter of the 10,000 bearings in the box.

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If 60% of the students prefer waffles to pancakes. If there are 5 students in the class, how many students prefer waffles?
AleksandrR [38]

Answer:

Hm mmm

Step-by-step explanation:

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