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3 years ago

Why is this graph proportional?

Mathematics

1 answer:

Anastasy [175]3 years ago

8 0

Answer:

The graph represents a linear function that passes through the origin.

Step-by-step explanation:

Proportional functions can be represented by $y=kx$ , where $k$ is some constant. They form a straight line that always pass through the origin (0,0). We can see all these characteristics in the graph, thus the graph is proportional.

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In an effort to estimate the mean of amount spent per customer for dinner at a major Lawrence restaurant, data were collected fo

larisa86 [58]

Answer:

The 99% confidence interval for the population mean is 22.96 to 26.64

Step-by-step explanation:

Consider the provided information,

A sample of 49 customers. Assume a population standard deviation of $5. If the sample mean is $24.80,

The confidence interval if 99%.

Thus, 1-α=0.99

α=0.01

Now we need to determine $z_{\frac{\alpha}{2}}=z_{0.005}$

Now by using z score table we find that $z_{\frac{\alpha}{2}}=2.58$

The boundaries of the confidence interval are:

$\mu-z_{\frac{\alpha}{2}}\times \frac{\sigma}{\sqrt{n} }\\24.80-2.58\times \frac{5}{\sqrt{49}}=22.96\\\mu+z_{\frac{\alpha}{2}}\times \frac{\sigma}{\sqrt{n} }\\24.80+2.58\times \frac{5}{\sqrt{49}}=26.64$

Hence, the 99% confidence interval for the population mean is 22.96 to 26.64

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4 years ago

Find the area of the trapezoid to the nearest tenth?

Dafna11 [192]

Answer: the answer is 3.1 square meters.

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4 years ago

What is 10 more than 56

AlekseyPX

66 is the answer (56+10)

3 0

3 years ago

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You can run 1/5mi in 2 min how long will it take you you run 2mi

madam [21]

Answer:

20 minutes

Step-by-step explanation:

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4 years ago

Guys please help (7thgrademath) both of the ones 1-10

Alex787 [66]

Hello!

Answer:

1. first u want to distribute the 3

3(n+4)+2

3n+12+2

Then add 12 and 2

3n+14

2. again, distribute

5(w+2)+3w-4

5w+10+3w-4

subtract

5w+10-4+3w-4-4

combine like terms

5w+3w+6+3w+3w

8w+6

3. distribute

3(w-2y)+w+4

3w-6y+w+4

Combine like terms

4w-6y+4

these are the first 3. if this is not what you wanted pls reach out! Hop this helps! :)

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3 years ago

Read 2 more answers