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Advocard [28]
3 years ago
12

Graph the direct variation equation. Y=-1/2x

Mathematics
1 answer:
Fiesta28 [93]3 years ago
7 0

Answer:  Pls add me brainliest!

Step-by-step explanation:   Slope: - 1/2

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The answer is 50.5

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What is the distance between points (-3 -5) and (-3 -7)?<br> Please help I’m tryna bring up my grade
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Read 2 more answers
For each table, determine whether it shows that x and y are proportional. If x and y are proportional, fill in the blank with nu
Vaselesa [24]
Table 1 is proportional as y=6x
Table 2 is not proportional
6 0
2 years ago
Please help me solve for x
andreev551 [17]

Answer:

x=9

Step-by-step explanation:

Corresponding angles are equal

7x - 3 = 60

+3

7x. = 63

÷7

x = 9

Check:

7x9 - 3 = 60

Hope this helps!

5 0
2 years ago
1. The data given below includes data from 42 ​candies, and 7 of them are red. The company that makes the candy claims that 33​%
jeyben [28]

Answer:

The 95% confidence interval for true proportion of red candies is (5%, 27%).

The true proportion of red candies made by the company is different from 33%.

Step-by-step explanation:

The hypothesis to determine whether the claim made by the candy company is correct or not is:

<em>H</em>₀: The true proportion of red candies made by the company is 33%, i.e. <em>p</em> = 0.33.

<em>Hₐ</em>: The true proportion of red candies made by the company is different from 33%, i.e. <em>p</em> ≠ 0.33.

A (1 - <em>α</em>)% confidence interval can be constructed to check this claim.

The decision rule is:

If the confidence interval consists the null value then the null hypothesis will not be rejected. Otherwise it will be rejected.

The (1 - <em>α</em>)% confidence interval for population proportion is:

CI=\hat p\pm z_{\alpha/2}\sqrt{\frac{\hat p(1-\hat p)}{n}}

The information provided is:

<em>n</em> = 42

<em>X</em> = number of red candies = 7

Compute the sample proportion of candies that are red as follows:

\hat p=\frac{X}{n}=\frac{7}{42}=0.167

The critical value of <em>z</em> for 95% confidence level is:

z_{\alpha/2}=z_{0.05/2}=z_{0.025}=1.96

*Use a <em>z</em>-table for the critical value.

Compute the 95% confidence interval for true proportion of red candies as follows:

CI=\hat p\pm z_{\alpha/2}\sqrt{\frac{\hat p(1-\hat p)}{n}}\\=0.167\pm 1.96\times \sqrt{\frac{0.167(1-0.167)}{42}}\\=0.16\pm0.1137\\=(0.0463, 0.2737)\\\approx(0.05, 0.27)

The 95% confidence interval for true proportion of red candies is (5%, 27%).

The confidence interval does not contains the null value.

Thus, the null hypothesis will be rejected at 5% level of significance.

Conclusion:

The true proportion of red candies made by the company is different from 33%.

7 0
3 years ago
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