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2 years ago

Which table of ordered pairs represents a proportional relationship?

Mathematics

1 answer:

bogdanovich [222]2 years ago

7 0

Answer:

Third table

Step-by-step explanation:

For the relationship to be proportional

y/x = constant

First table y/x = 8/4 = 2 then 7/11 doesn't =2 so it is not

Second table y/x =52/5 = 5 then 49/7 doesn't =5 so it is not

Third table y/x = 3/6=1/2 then 5/10 = 1/2 then 7/14 = 1/2 it is proportional

Last table y/x = 6/3 = 2 then 11/8 doesn't =2 so it is not

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Which equation represents the slope-intercept form of the line below?

steposvetlana [31]

Answer:

$y=\frac{1}{4} x-5$

Step-by-step explanation:

Slope intercept from is represented as :

$y = mx + b$

So, plugging in the numbers it would look like this :

$y=\frac{1}{4} x-5$

Hope this helps. Please mark brainliest!

3 0

3 years ago

1/2 + 1/6 what is it pls help!!!!

ale4655 [162]

Answer:

4/6

Step-by-step explanation:

1/2 = 3/6. 3/6 + 1/6 = 4/6

3 0

3 years ago

Read 2 more answers

Suppose we choose7 objects without replacement from 9 objects

stiks02 [169]

Answer:

Step-by-step explanation:

We have 9 choices for Choosing the first object

8 choices for Choosing the 2nd object

3 choices for Choosing the seventh object

Therefore if we want to choose7 objects without replacement from 9 objects we have : 9×8×7×6×5×4×3 = 181 440

Also ,we can calculate it this way :

9P7 = 181 440

7 0

2 years ago

Solve the inequality 3k > 5k+12

Natali5045456 [20]

Alright, let's solve this problem! :)

<u>First we need to subtract 5k from both sides.</u>

3k−5k>12

<u>Then we simplify 3k - 5k to -2k.</u>

-2k > 12

<u>Now we divide both sides by -2.</u>

k < -12/2

<u>Now we simplify 12/2 to 6. </u>

k < -6

✔️Done!

Have an amazing day!

4 0

3 years ago

Pineapple Corporation (PC) maintains that their cans have always contained an average of 12 ounces of fruit. The production grou

krok68 [10]

Answer:

We accept the null hypothesis, that is, that the mean weight of the cans is still of 12 ounces of fruit.

Step-by-step explanation:

Pineapple Corporation (PC) maintains that their cans have always contained an average of 12 ounces of fruit.

This means that the null hypothesis is: $H_0: \mu = 12$

The production group believes that the mean weight has changed.

This means that the alternate hypothesis is:

$H_a: \mu \neq 12$

The test statistic is:

$z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

In which X is the sample mean, $\mu$ is the value tested at the null hypothesis, $\sigma$ is the standard deviation and n is the size of the sample.

12 is tested at the null hypothesis:

This means that $\mu = 12$

They take a sample of 15 cans and find a sample mean of 12.05 ounces and a sample standard deviation of .08 ounces.

This means, respectibely, that $n = 15, X = 12.05, \sigma = 0.08$

Value of the test statistic:

$z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

$z = \frac{12.05 - 12}{\frac{0.08}{\sqrt{15}}}$

$z = 2.42$

Pvalue of the test:

We are testing if the mean is different from a value, which means that the pvalue is 2 multiplied by 1 subtracted by the pvalue of z = 2.42.

Looking at the z-table, z = 2.42 has a pvalue of 0.9922

1 - 0.9922 = 0.0078

2*0.0078 = 0.0156

What conclusion can we make from the appropriate hypothesis test at the .01 level of significance?

0.0156 > 0.01. This means that at the 0.01 level, we accept the null hypothesis, that is, that the mean weight of the cans is still of 12 ounces of fruit.

6 0

2 years ago