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Ratling [72]
3 years ago
13

what is the average speed of a train that covers 80 km in 1 hour, 200 km in 2 hours and 420 kn in 4 hours

Mathematics
1 answer:
omeli [17]3 years ago
6 0

Answer:

95

Step-by-step explanation:

80+(200 divided by 2)+(420 divided by 4)=285

285 divided by 3=95

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The mean volume for a bottle of cologne is 4 ounces and the standard deviation is 0.22 ounces. A random sample of 121 bottles is
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Answer:

The standard error of the mean is 0.02

Step-by-step explanation:

Here, we want to calculate the standard error of the mean.

Mathematically;

standard error of mean = SD/ √n

where SD is the standard deviation and n is the number of samples

From the question, SD = 0.22 and n = 121

Inserting this into the equation

Standard error of the mean = 0.22/√121

= 0.22/11 = 0.02

6 0
3 years ago
To which graph does the point (−1, 3) belong? y ≥ 2x + 6 y ≥ 3x − 1 y ≥ −x + 3 y ≥ −2x + 5
Anna35 [415]
Well first find the slope of the point
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4 0
3 years ago
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8 0
2 years ago
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In a class of 23 students 9 are taking German and nine are taking Spanish. Of the student studying German or Spanish, 3 are taki
Colt1911 [192]
8 Students are not enrolled. Reason being 9 are taking German and 9 are taking Spanish so 9+9= 18 but because 3 are taking both you subtract 3 so that would give you 15 and 23-15=8

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3 years ago
Order the percents,decimals and fractions from ​least to greatest​. Put your answer in ​percent form.9.2%, 2/5, 0.065, 6.56
GREYUIT [131]

Answer:

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Step-by-step explanation:

see answer

6 0
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