3 years ago

Enter the equation of the line in slope-intercept form.

Mathematics

1 answer:

likoan [24]3 years ago

3 0

Equation parallel to y = -x is y=-x+k

so 4.5 = -7 + k so k - 11.5

Equation is y = -x + 11.5

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An SRS of size 20 is drawn from a population that has a normal distribution. The sample has a mean of 122.5 and a standard devia

Tems11 [23]

Answer:

The value is $\sigma_{\= x} = 1.789$

Step-by-step explanation:

From the question we are told that

The sample size is n = 20

The sample mean is $\= x = 122.5$

The standard deviation is $s = 8$

Generally the standard error of the mean is mathematically represented as

$\sigma_{\= x} = \frac{s}{\sqrt{n} }$

=> $\sigma_{\= x} = \frac{8}{\sqrt{20 } }$

=> $\sigma_{\= x} = 1.789$

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2 years ago

2. Solve for x: 2(x - 5) = x + 3(x + 2)

MrMuchimi

Answer:

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Step-by-step explanation:

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Eric created a rectangular patio using 1 foot square paving stones,which are sold in batches by the dozen. The patio measures 7

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I believe it is 56 because 7•8 is 56 and 1•56 is 56

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2 years ago

The distance between two towns is 120 km these are approximately 80 km in 5 miles which measurement is closer to the number of m

Helga [31]

Answer:

7.5 miles

Step-by-step explanation:

5 miles in 80 km

Total distance = 120 km

120- 80= 40 km

80 km = 5miles

1 km = 5miles/ 80km

120 km = 5/80 * 120 km = 7.5 miles

This is called unitary method. First we find 1 km by dividing the miles with the number of km and then multiply the number of km to find the total number of miles.

Total distance = 120 km

120- 80= 40 km

if there are 5 miles in 80 km then there will be half of the miles in half of the km . So there will be 2.5 miles in 40 km .

So the total number of miles would be

40+80 km= 5+ 2.5 miles

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Answer:

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Step-by-step explanation:

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3 years ago