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2 years ago

Help please 5x-2y=-10

Mathematics

1 answer:

Lena [83]2 years ago

6 0

Answer:

$5x - 2y = - 10 \\ 5x = - 10 + 2y \\ x = \frac{ - 10 + 2y}{5} \\ \\$

when y=0,-5,5,-10,10

then x=-2,-4,0,-6,2

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3 years ago

The first discount on a camera was 18%. The second discount was 20%. After these two discounts the price was $328. What was the

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<u>Second Discount</u>

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$\frac{80}{100} =\frac{328}{y}$

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<u>First Discount</u>

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3 years ago

1. How many variables are involved in the chi-square test?

GarryVolchara [31]

The result of the respective questions are:

This chi-square test only takes into consideration one variable.
The type of chi-square test this is is a Goodness of Fit
df= 3
NO

<h3>How many variables are involved in the chi-square test?</h3>

This chi-square test only takes into consideration one variable.

The type of chi-square test this is, is a Goodness of Fit

To test the hypothesis, we must determine whether the actual data conform to the assumed distribution.

The "Goodness-of-Fit" test is a statistical hypothesis test that determines how well the data that was seen resembles the data that was predicted.

Parameter

n = 4

Therefore

Degrees of freedom

df= n - 1

df= 4 - 1

df= 3

In conclusion

Parameters

$\alpha = 0.05$

df = 3

Hence

Critical value = 7.814728

Test statistic = 6.6

Test statistic < Critical value, .

NO, the result of this test is not statistically significant.