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4 years ago

NEW: Please help! [99 Points]

Mathematics

2 answers:

Zinaida [17]4 years ago

4 0

The domain are the x values and the range is the y values. In this case you are looking at the x values. You also want to put them in order
{-2, -1, 4, 6}
Your answer is A!
Hope this helps!

saveliy_v [14]4 years ago

3 0

The domain is the x-values listed in the points.

With this knowledge, we know that the domains are -2, 2, -1, 4

A. {-2,-1, 2, 4} is your answer

hope this helps

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Which expression is equivalent to 6 x + 8?

murzikaleks [220]

2(3x+4) you multiply 2 times 3x and 2 times 4 which gives you 6x+8

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3 years ago

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The general term of an arithmetic sequence is tn = 32 + 3n, where n ∈N and n ≥ 1. The sequence is A) 32, 35, 38, 41, 44, 47,...

den301095 [7]

Answer:

35,38,41,44,47,50,....

Step-by-step explanation:

n ∈N means that n is an element of Natural numbers

Natural numbers are whole non-negative numbers

n ≥ 1, means that n = 1, 2, 3, 4, 5, 6,........

tn = 32 + 3n

the first term t1 = 32 + 3(1)

32 + 3 = 35

the second term t2 = 32 + 3(2)

32 + 6 = 38

the third term t3 = 32 + 3(3)

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3 years ago

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amm1812

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3 years ago

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A school authority claims that the average height of students is 178 cm. A researcher has taken a well-designed survey and his s

Hunter-Best [27]

Answer:

d) The difference exists due to chance since the test statistic is small

Step-by-step explanation:

From the given information:

Population mean = 178 cm

the sample mean = 177.5 cm

the standard deviation = 2

the sample size = 25

The null hypothesis and the alternative hypothesis can be computed as:

Null hypothesis:

$H_o: \mu = 178$

Alternative hypothesis:

$H_1: \mu \neq 178$

The t-test statistics is determined by using the formula:

$t = \dfrac{X - \mu}{\dfrac{\sigma}{\sqrt{n}}}$

$t = \dfrac{177.5 - 178}{\dfrac{2}{\sqrt{25}}}$

$t = \dfrac{-0.5}{\dfrac{2}{5}}}$

$\mathbf{t= -1.25}$

Degree of freedom df = n- 1

Degree of freedom df = 25 - 1

Degree of freedom df = 24

At the level of significance ∝ = 0.05, the critical value = 2.064

Decision rule: To reject the null hypothesis if the test statistics is greater than the critical value at 0.05 level of significance

Conclusion: We fail to reject the null hypothesis since the test statistics is lesser than the critical value and we conclude that the difference exists due to chance since the test statistic is small

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3 years ago

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Answer:

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