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ad-work [718]
4 years ago
9

??????can someone help???

Mathematics
1 answer:
ehidna [41]4 years ago
8 0
The answer is C, from where the end lines go down to on the graph
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Today, the price of a new cellphone is $380. In 2010, the price of a similar cellphone was $240. What is the percent of change i
Dahasolnce [82]
36.8% or 37% is the percent change
8 0
3 years ago
Please helpppppppppppp
ioda

Answer:

96

Step-by-step explanation:

3*6=18*2=36

6*10=60*2=120

10*3=30*2=60

36+60+120=

216

8 0
3 years ago
Read 2 more answers
A simple random sample of 60 is drawn from a normally distributed population, and the mean is found to be 28, with a standard de
marshall27 [118]

For the simple random sample, drawn from a normally distributed population, value of 27, because it’s greater than 26. 7 and less than 29. 3.

<h3>What is normally distributed data?</h3>

Normally distributed data is the distribution of probability which is symmetric about the mean.

The mean of the data is the average value of the given data. The standard deviation of the data is the half of the difference of the highest value and mean of the data set.

Total number of sample is 60. The mean found to be 28, with a standard deviation of 5. The z-score is 1. 96.

The margin of error can be found out using the following formula as,'

MOE=z\times\dfrac{\sigma}{\sqrt n}

Put the values as,

MOE=1.96\times\dfrac{5}{\sqrt 60}\\MOE=1.2652

As, the mean of the sample is 28. Thus, the upper and lower limits are,

UL=28+1.2652=292625\\UL=28-1.2652=26.7348

Hence, For the simple random sample, drawn from a normally distributed population, value of 27, because it’s greater than 26. 7 and less than 29. 3.

Learn more about the normally distributed data here;

brainly.com/question/6587992

8 0
2 years ago
Arthur is treating his friends to a meal at Chez rich. The meals add up to $136.45. If he tips the waiter 15% what is the amount
Ulleksa [173]
Basically you need to find what 15% of 136.45 is. You do this by changing the percent to a decimal, so 15% would be .15. Following this, you would multiply 136.45*.15. This will give your answer.
3 0
3 years ago
X2 + 3x - 4 = 0 Find the value of the discriminant. A) 5 B) 6 C) 10 D) 25
sashaice [31]

Answer:

D

Step-by-step explanation:

given a quadratic equation in standard form

ax² + bx + c = 0, then the discriminant is

Δ = b² - 4ac

x² + 3x - 4 = 0 ← is in standard form

with a = 1, b = 3, c = - 4

b² - 4ac = 3² - (4 × 1 × - 4) = 9 - (- 16) = 9 + 16 = 25 → D

3 0
4 years ago
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