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avanturin [10]
3 years ago
6

2 A computer is discounted by 20%. If the original cost is $450, what is the sales price?

Mathematics
2 answers:
eduard3 years ago
3 0
It’s 90 you just do 20 percent times 450
garri49 [273]3 years ago
3 0

Answer:

$360

Step-by-step explanation:

This is because the discount is $90 since 0.20 (20%) x 450 is 90.

To find the sales price, you have to subtract the discount by the original price.

450 - 90 = 360, therefore the sales price is $360.

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8/10

Step-by-step explanation:

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4 years ago
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Identify the sampling techniques​ used, and discuss potential sources of bias​ (if any). Explain. In​ 1965, researchers used ran
crimeas [40]

Answer:

For this case, the method used would be simple random sampling since random digit dialing assumes that all possible people in the population have the same probability of being chosen.

We may have a non-response bias, because if a selected person does not choose the phone, we have no answers to the questions and there is no data available.

We may also have under coverage bias because some people may not have a phone and in this case these people would be excluded from the study

Step-by-step explanation:

For this case is important to remember the different types of sampling methods

Simple random sampling is a method where we select a sample size n and each individual in the population are equally likely to be selected.

Stratified random sampling is a method on which we select samples from subgroups of the population usually called strata.

Convinience sampling is a method that use a random number so select the sample

Cluster sampling is a method that separates the population in natural subgroups with no intersection between them and some of the groups are selected for the sample.

For this case, the method used would be simple random sampling since random digit dialing assumes that all possible people in the population have the same probability of being chosen.

Sources of bias

We may have a non-response bias, because if a selected person does not choose the phone, we have no answers to the questions and there is no data available.

We may also have under coverage bias because some people may not have a phone and in this case these people would be excluded from the study

8 0
3 years ago
Which statement best describes f(x)=-2sqrtx-7+1
ruslelena [56]

Answer:

Step-by-step explanation:

the 3  statement is true

4 0
3 years ago
A restaurant bought 36.5 pounds of beef from a store. The next​ month, the restaurant bought 71.3 pounds of beef and 21.5 pounds
Elena L [17]

Answer:

129.3

Step-by-step explanation:

Well, this is a addition problem, the only thing you need to do is add

36.5 + 71.3 + 21.5

Hope it helps :D

3 0
2 years ago
5/8 ÷ 3/4<br><br> I Need help?<br> LIKE NOW!!!
jolli1 [7]

Answer: 5/6

Step-by-step explanation:

5/8 / 3/4

5/8 * 4/3= 20/24

20/24 / 4/4 = 5/6

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2 years ago
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