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mr Goodwill [35]
3 years ago
12

A pet store sold a whopping amount of 15 pets in a day. The pet store sold only dogs and cats. Each dog was marketed for $150 wh

ile cats were sold at a price of $120. If the store made a profit of $2070, how many dogs were sold? How many cats were sold? Write and solve a system of equations to find out the problem using the following methods: Elimination, substitution, and graphing. Check your answer.
Mathematics
1 answer:
Ivenika [448]3 years ago
7 0
9 dogs 6 cats is the answer 
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The following scatterplot shows the percentage of the vote a candidate received in the 2016 senatorial elections
neonofarm [45]

The critical values corresponding to a 0.01 significance level used to test the null hypothesis of ρs = 0 is (a) -0.881 and 0.881

<h3>How to determine the critical values corresponding to a 0.01 significance level?</h3>

The scatter plot of the election is added as an attachment

From the scatter plot, we have the following highlights

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Start by calculating the degrees of freedom (df) using

df =n - 2

Substitute the known values in the above equation

df = 8 - 2

Evaluate the difference

df = 6

Using the critical value table;

At a degree of freedom of 6 and significance level of 0.01, the critical value is

z = 0.834

From the list of given options, 0.834 is between  -0.881 and 0.881

Hence, the critical values corresponding to a 0.01 significance level used to test the null hypothesis of ρs = 0 is (a) -0.881 and 0.881

Read more about null hypothesis at

brainly.com/question/14016208

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3 0
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o-na [289]
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Answer:

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Answer:

false

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

3 1/2 feet / minute = 3.5 feet / minute

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