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3 years ago

What is the slope of the line passing through the points (2.-3) and (4,3). Make sure you reduce your answer answer.

Mathematics

1 answer:

svet-max [94.6K]3 years ago

5 0

Answer:

Step-by-step explanation:

We must find the slope using the slope formula.

Slope: $m=\frac{y_2-y_1}{x_2-x_1}$

We substitute $x_1=2\\y_1=-3$ and $x_2=4\\y_2=3$

$m=\frac{3-(-3)}{4-2}$

$m=\frac{3+3}{2}=\frac{6}{2} =3$

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A study is conducted to determine if a newly designed text book is more helpful to learning the material than the old edition. T

Oksanka [162]

Answer:

The null and alternative hypotheses are:

$H_{0}:\mu=75$

$H_{a} : \mu>75$

Under the null hypothesis, the test statistic is:

$t=\frac{\bar{x}-\mu}{\frac{s}{\sqrt{n}} }$

Where:

$\bar{x} =83$ is the sample mean

$s=9.8206$ is the sample standard deviation

$n=10$ is the sample size

$\therefore t= \frac{83-75}{\frac{9.8206}{\sqrt{10}} }$

$=2.58$

Now, we can find the right tailed t critical value at 0.01 significance level for df = n-1 = 10 - 1 = 9 using the t distribution table. The t critical value is given below:

$t_{critical} =2.821$

Since the test statistic is less than the t critical value, we therefore, fail to reject the null hypothesis and conclude that there is not sufficient evidence to support the claim that the people do better with the new edition.

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3 years ago

The relationship represented by the table below is proportional ?

Natasha2012 [34]

Answer:

false

Step-by-step explanation:

Because it multiplying by 2's but 13x2=26 but it says 24 so that why it is false

8 0

3 years ago

Read 2 more answers

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