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3 years ago

What is the value of M ( there is not any multiple-choice answers)

Mathematics

1 answer:

grin007 [14]3 years ago

8 0

Answer:

sum of anngles of triangle=180

a+b+c=180

55+70+m=180

125+m=180

m=180-125

m=55

Step-by-step explanation:

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Answer:

25 and 21 hours respectively

Step-by-step explanation:

Let the number of hours worked by each welder be x and y respectively.

They worked a total of 46 hours. This means :

x + y = 46 hours.......(I)

Now, given their hourly charges, since we have the total amount of money realized, we can make an equation out of it. This means:

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We then solve both simultaneously. From I, x = 46 -y

We can substitute this into ii

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2 years ago

A data set is normally disturbed. As data points are removed from both ends of the range, what happens to the display of data?

sergij07 [2.7K]

Answer: The display becomes skewed left.

Step-by-step explanation:

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2 years ago

Whats the missing length indicated?!? help!!

jeka94

Answer:

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Step-by-step explanation:

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3 years ago

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nexus9112 [7]

Answer:

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Step-by-step explanation:

Information given

n=370 represent the sample selected

$\hat p=0.4$ estimated proportion of readers owned a laptop

$p_o=0.45$ is the value that we want to test

z would represent the statistic

$p_v$ represent the p value

Creating the hypothesis

We need to conduct a hypothesis in order to test if the true proportion of readers owned a laptop is different from 0.45, the system of hypothesis are:

Null hypothesis: $p=0.45$

Alternative hypothesis: $p \neq 0.45$

The statistic is:

$z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}}$ (1)

Replacing we got:

$z=\frac{0.40 -0.45}{\sqrt{\frac{0.45(1-0.45)}{370}}}=-1.933$

Calculating the p value

We have a bilateral test so then the p value would be:

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