1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Arturiano [62]
3 years ago
13

What is the solution to this system of equations?

Mathematics
1 answer:
Kazeer [188]3 years ago
7 0

Answer:

C

I just used elimination. Hope this helps!

You might be interested in
Sorry if my last one didn't have a picture, I decided to use a pdf to png converter instead.
laiz [17]

Answer:

Step-by-step explanation:

5 0
2 years ago
The sum of z and 7? What is it plz
wolverine [178]

Answer:

z + 7

Step-by-step explanation:

<u>Step 1:  Convert words into an expression</u>

The sum of z and 7

<em>z + 7</em>

<em />

Answer:  z + 7

<u>If needed solve:</u>

z + 7 - 7 = 0 - 7

<em>z = -7</em>

5 0
2 years ago
Read 2 more answers
Which of the lines below is a line of symmetry?
Stolb23 [73]
Answer:

D

Explanation:

Both lines divide the image into equal halves.
4 0
3 years ago
Read 2 more answers
Can someone please helpp me in mathhhh i am failingggggggggggggg
butalik [34]
<span>1.
Given that a study uses statistical methods to conclude that there is an association between the weights of cars and the amounts of fuel consumption.

This means that the study established a correlation between </span><span>the weights of cars and the amounts of fuel consumption.

But, </span>a<span><span> correlation between variables, however, does not automatically mean that the change in one variable is the cause of the change in the values of the other variable.
</span>
Therefore, the conclusion by the study that adding weight to a car is what makes it consume more fuel is wrong because The conclusion is based on a correlation that implies causality.


</span><span>2.
Given that a recent government agency found that 89% of people that owned a car were above the poverty line, while only 8% of people that did not own a car were above the poverty line. They concluded that owning a car kept people out of poverty and started a program to give cars to people below the poverty line.

We can see that the problem with the study is that the government agency automatically assumed that the correlation between the variables implies causality.


</span><span>3.
Given that a government agency produced a study in which they randomly chose 100 students just beginning college to determine what percentage of students who begin college graduate with a degree. After four years they identified that 23 had dropped out of college, 45 had graduated, and 20 were still pursuing their degree.

Notice that the number of final sample is less than the number of the initial sample.

Therefore, What is wrong with this poll is that some of the sample data are missing.
</span>

<span>4.
Given that a shampoo company recently paid a consulting firm to produce a study to determine if using their product resulted in cleaner hair than other brands.

As can be noticed the study is based on the self interest of the shampoo company.

Therefore, the thing wrong with this study is that it is a self-interest study.


</span><span>5.
Given that a survey was recently quoted to support the news that the number of trees in the United States is increasing. Upon further research it was found that the survey was fully funded by a logging company.

As can be seen, the logging company funded the survey in other to justify their activities

Therefore, the problem with this survey is that it is a self-interest study.
</span>

<span>6.
Given that a radio station sent a letter in the mail to 1000 randomly chosen residents within its broadcast area. The letter contained one dollar and a survey. The survey asked recipients to track their radio habits over a week. The survey was to be filled out and sent back in to the radio station.

Here, the major problem with this study is the problem of non-response.
There is every possibility that not all the mails will be delivered either way.

Therefore, a problem with the study is that a nonresponse occurred.


</span><span>7.
Given that the fire department in California decided to take a poll to see if residents would pay a monthly fee for their services. They polled 22 people in the state and concluded that residents were not willing to pay a monthly fee.

As can be seen, a sample of 22 people is too small to refrect the views of the population of a state.

Therefore, what is wrong with this poll is that the conclusion is based on a small sample.


</span><span>8.
Given that a campaign manager created a survey to see if the candidate could be elected into office. The survey randomly chose 1,832 voters and asked them whom they would vote for. Of those surveyed, 953 people responded that they would vote for the candidate. Because there are 87,403 voters in the area, the results mean that 45,466 people would vote for this candidate.

As can be seen, the surveyor concluded that a  similar proportion of voters responded that they would vote for the candidate, would vote for his candidate. This is a precise number and surveys do not usually result in a presice number but in a proportion with an allowed margin of error.

Therefore, a problem with the study is that the result is a precise number.
</span>

<span>9.
Given that a hospital did a ten-year study on patients who used its services. One thousand patients were randomly selected and followed over a period of ten years to determine the average number of visits per year. By the end of the ten year period some of the patients had left the area.

As can be seen, because some of the patients had left the area, the problem with the poll is that some of the sample data are missing.


</span><span>10.
Given that a city council had a proposal for a new traffic light at an intersection that had a recent accident. The council decided to take a poll of 284 randomly selected residents and asked if they would support the construction. Of those polled, 219 stated that they would support the new traffic light and 45 said they would not.

</span><span>Notice that the number of final sample is less than the number of the initial sample. (i.e. 219 + 45 = 264 which is less than 284)

Therefore, </span><span><span><span>the problem with the study</span> is that some of the sample data are missing.</span></span>
4 0
3 years ago
Read 2 more answers
Find the quotient of 3 2/5 and 3 1/6 . Express your answer in simplest form.
ladessa [460]
Decimal Form: 1.07
Mixed Number:1 7/95


3 0
3 years ago
Read 2 more answers
Other questions:
  • How could you use 5x6=30 to find the product of 6x6?
    14·1 answer
  • Can you help me with the Anabella question pls
    11·2 answers
  • What is 10 ×7 thousand in unit and standard form
    15·1 answer
  • Which set of numbers can represent the side lengths, in inches, of an acute triangle? 4, 5, 7 5, 7, 8 6, 7, 10 7, 9, 12
    11·2 answers
  • Which option is correct and how would one solve for it?
    15·1 answer
  • What does x equal?????
    7·1 answer
  • Hanks pickup can travel 68 miles on 4 gallons of gas. How many gallons will hanks pickup need to travel 51 miles
    12·2 answers
  • I need help with 14 and 15
    7·2 answers
  • The Williams family goes shopping, and spend $95.00. They have a coupon for 20% off and the sales tax is 8%. What is the total c
    9·1 answer
  • jane bought two new skirts for school. one cost 15 less than twice the cost of the total cost for both skirts was 75, what was t
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!