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3 years ago

Any one want to exchange brainly- 1+1=?

Mathematics

2 answers:

melisa1 [442]3 years ago

7 0

Answer:

Step-by-step explanation:

You have an apple you eat it, you don't have an apple anymore, but you have a good health, because apples are good.

-1+1=0

horsena [70]3 years ago

5 0

Answer:

1+1=2

Thanks

Step-by-step explanation:

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The organizers of a carnival need to buy a total of 200 small and large signs combined for the event. If the small signs cost $5

pochemuha

Answer:25$

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3 years ago

Find the slope of the line passing through each of the following pairs of points and draw the graph of the line. (-2, 3), (5, 5)

Lady_Fox [76]

Answer:

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Step-by-step explanation:

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3 years ago

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aliina [53]

Answer:

The answer should be B

Step-by-step explanation:

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3 years ago

Read 2 more answers

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

A movie theater is selling adult’s tickets for $11 and children’s tickets for $6. If the movie theater sold a total of 114 ticke

ycow [4]

Answer:

there were 82 adult tickets and 32 children tickets that were sold

Step-by-step explanation:

x = adult's tickets

y = children's tickets

$\left \{ {{x + y = 114} \atop {11x + 6y = 1094}} \right.$

x + y = 114

y = -x +114

replace y by -x +114 in the second equation

11x + 6y = 1094

11x + 6(-x + 114) = 1094

11x -6x + 684 = 1094

5x + 684 = 1094

5x = 410

x = 82

x + y = 114

82 + y = 114

y = 32

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4 years ago