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3 years ago

Can you explain how to do this

Mathematics

1 answer:

zaharov [31]3 years ago

3 0

Answer:

-18x+89

Step-by-step explanation:

Here's why simple to simplify this expression we heave to first get rid of the parentheses so we distribute the 9. So we get:7-18x+81+1.

Now we can simplify easily:-18x+89

If this helps hit Thank button!

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dimulka [17.4K]

Answer:

26%

Step-by-step explanation:

Given that Dan has 59 new email messages and 13 have attachment then the proportion that have attachments may be expressed as a ratio of the number with attachments to the total number of emails.

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3 years ago

Who can help me with 17 and 18

nikklg [1K]

Answer:

correct statements in Q no. 17 are;

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4.19
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Step-by-step explanation:

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3 years ago

A new company is in the process of evaluating its customer service. The company offers two types of sales: (1) Internet sales an

iragen [17]

Answer:

$H_A: P_{\text{Internet}}-P_{\text{Store}} > 0.10$

Step-by-step explanation:

We are given the following in the question:

Let $P_{\text{Internet}}$ be the proportion of the internet sales and $P_{\text{Store}}$ be the proportion of the store sale.

Hypothesis:

We have to conduct a hypothesis to check that the Internet sales are more than 10 percent higher than store sales.

Thus, we can design the null and alternative hypothesis as:

$H_{0}: P_{\text{Internet}}-P_{\text{Store}}\leq 0.10\\H_A: P_{\text{Internet}}-P_{\text{Store}} > 0.10$

Alternate Hypothesis:

The alternate hypothesis states that the proportion of the internet sales is greater than the proportion of store sales by 10 percent.

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3 years ago