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Effectus [21]
3 years ago
6

How to round 21.38 to the nearest tenth?

Mathematics
1 answer:
stealth61 [152]3 years ago
4 0
The answer to that is 40
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A hypothesis test has a significance level of 10%. Explain what this significance level represents.
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In statistical methods, the significance level is a value that is used as a criterion for rejecting a null hypothesis. It used by first looking at the differences between the experimental results and from there the null hypothesis would be determined. Then, we assume that the null hypothesis is true, the probability of the differences is computed by using statistical tools. If the computed probability is less than or equal to the value of the significance level, then you conclude that the null hypothesis should be rejected and that the results are statistically significant. Usually, a significance level of 1% or 5% is used. 
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3 years ago
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On the grid, sketch a graph to represent
Greeley [361]

Answer:

Please find attached, the required graph created on MS Excel

Step-by-step explanation:

The distance between Sandy's house and the school = 200 m

The number of minutes Sandy talked to her friend for = 10 minutes

The time it took Sandy to return home to pick her homework = 5 minutes

Let <em>x </em>represent Sandy's location she stops to talk to her friend 10 minutes, we have;

The slope of the motion on the graph, m₁ = (x - 0)/(t - 0)

The slope of her motion running home to pick the up her homework, m₂ = (x - 0)/(5 - 0)

Given that t > 5, the slope on trip back home, m₁, is larger than are her initial slope, m₂

Therefore, where x = 125, we have;

The rate at which she returned home = m₂ = (125 m - 0)/(5 min - 0) = 25 m/min

Given that the same rate m₂ is what she used in heading back to school, we have;

The time it takes her to get to school = 200 m/(25 m/min) = 8 minutes

Therefore, whereby it took her 10 minutes to reach point <em>x</em>, we have the following coordinate points on the graph in a tabular form;

\begin{array}{ccc} Time \ (minutes) \ x-axis&&Distance  \ (meters) \ y-axis\\0&&0\\10&&25\\15&&0\\23&&200\end{array}

The plot of the above point is completed using MS Excel as shown in the attached diagram.

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2 years ago
Suppose a coin is tossed 100 times. about how many times would you expect to get heads?
klasskru [66]

The coin should land on heads around 50 times

7 0
3 years ago
In the end it says solve for X <br> show work
elena55 [62]

Answer:

x = 53

Step-by-step explanation:

angle 3 + angle 8 = 180 because of linear pair

66 + 2x + 8 = 180

74 + 2x = 180

2x = 180 - 74

2x = 106

x = 106/2

x = 53

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2 years ago
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The scale factor is 5:1 so the scale drawing is____ times the size of the object
aliya0001 [1]
It is 5 times the size of the object
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