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3 years ago

What is the speed of a train that travels 52 kilometers in 3 hours?

Mathematics

2 answers:

Over [174]3 years ago

5 0

Answer:

17 km/hr

Step-by-step explanation:

Speed=

$\frac{distance}{time}$

so, since the units are the same, kilometer per hour and hour, we simply divide

that's

$\frac{52}{3}$

and that's 17.333 approximately 17km/hr

qaws [65]3 years ago

4 0

Answer:

17 km/h

Step-by-step explanation:

52:3=17.3≈17 km/hour

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Help with this please.

Ivanshal [37]

Answer:

True
True

Step-by-step explanation:

This question asks you to compare the coordinates of the vertex of each function.

The vertex of the function is its minimum, the point where the graph stops decreasing and starts increasing. It is the lowest point on the graph.

The vertex is (-4, -1). The minimum is -1, located at x = -4.

The vertex is (1, -25). The minimum is -25, located at x = 1. We know this is the minimum because there are no g(x) values that are lower (more negative).

<h3>comparison</h3>

The minimum of f(x), -1, is greater than the minimum of g(x), -25. TRUE

The x-value of f(x) at its minimum, -4, is less than the x-value of g(x) at its minimum, 1. TRUE

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2 years ago

95×2 the answer to problem is

KengaRu [80]

95 times 2 is 190.

90 times 2 is 180, and 5 times 2 is 10.

180 + 10 = 190.

3 0

3 years ago

Read 2 more answers

Follow the steps to find the value of x 1/5(x)5/1=6/3(5/1)

german

Answer: x=10

This is the answer I got.

6 0

3 years ago

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Hatshy [7]

Answer: I think its D

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3 years ago

A cereal box filling machine is designed to release an amount of 16 ounces of cereal into each box, and the machine’s manufactur

Paraphin [41]

Using the z-distribution, it is found that since the p-value is less than 0.05, there is evidence that the mean amount of cereal in each box is different from 16 ounces at 0.05 significance.

<h3>What are the hypothesis tested?</h3>

At the null hypothesis, it is tested if the mean is not different to 16 ounces, that is:

$H_0: \mu = 16$

At the alternative hypothesis, it is tested if the mean is different, hence:

$H_1: \mu \neq 16$

<h3>What is the test statistic?</h3>

The test statistic is:

$z = \frac{\overline{x} - \mu}{\frac{\sigma}{\sqrt{n}}}$

In which:

$\overline{x}$ is the sample mean.

$\mu$ is the value tested at the null hypothesis.

$\sigma$ is the standard deviation of the population.

n is the sample size.

The parameters for this problem are:

$\overline{x} = 15.75, \mu = 16, \sigma = 1.46, n = 150$ .

Hence:

$z = \frac{\overline{x} - \mu}{\frac{\sigma}{\sqrt{n}}}$

$z = \frac{15.75 - 16}{\frac{1.46}{\sqrt{150}}}$

z = -2.1

<h3>What is the p-value and the conclusion?</h3>

Using a z-distribution calculator, for a two-tailed test, as we are testing if the mean is different of a value, with z = -2.1, the p-value is of 0.0357.

Since the p-value is less than 0.05, there is evidence that the mean amount of cereal in each box is different from 16 ounces at 0.05 significance.

More can be learned about the z-distribution at brainly.com/question/16313918

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3 0

2 years ago