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madam [21]
2 years ago
5

Find the of the slope of the line through (6,-10) and (4,-8)

Mathematics
1 answer:
IceJOKER [234]2 years ago
5 0

Answer:

-1

Step-by-step explanation:

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6 = -4x + y<br> -5x - y = 21<br> Please Help Fast!!!!!! Substitution
Vera_Pavlovna [14]

Answer:

y = 4x + 6

-5x - 4x - 6 = 21

-9x - 6 = 21

-9x = 27

x = -3

y - 4(-3) = 6

y + 12 = 6

y = -6

(-3, -6)

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3 years ago
If the farmers market sold 35% of its produce and has 280 peaches remaining, how many peaches did it have?
PSYCHO15rus [73]

100-35 = 65%

280/0.65 = 430

 he had 430 peaches


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3 years ago
If M and N are midpoints in a diagram below, determine values for x and y
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Research scientists use a standard practice called the _____ method to help them understand phenomena.
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7 0
3 years ago
A toy manufacturer wants to know how many new toys children buy each year. A sample of 305 children was taken to study their pur
Harrizon [31]

Answer:

The 80% confidence interval for the mean number of toys purchased each year is between 7.5 and 7.7 toys.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1 - 0.8}{2} = 0.1

Now, we have to find z in the Ztable as such z has a pvalue of 1 - \alpha.

That is z with a pvalue of 1 - 0.1 = 0.9, so Z = 1.28.

Now, find the margin of error M as such

M = z\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

M = 1.28\frac{1.5}{\sqrt{305}} = 0.1

The lower end of the interval is the sample mean subtracted by M. So it is 7.6 - 0.1 = 7.5

The upper end of the interval is the sample mean added to M. So it is 7.6 + 0.1 = 7.7

The 80% confidence interval for the mean number of toys purchased each year is between 7.5 and 7.7 toys.

8 0
3 years ago
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