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nlexa [21]
3 years ago
11

HELLPPSPSSPSSPSPSSSSSSSSSSSSSSSS

Mathematics
2 answers:
Mrac [35]3 years ago
4 0
3x - y = 13

0 - y = 13
y= -13
( 0 , -13)
so neither
alina1380 [7]3 years ago
4 0
C. Both (6,5) and (3,-4)

you can work from the answer to the solution since it is multiple choice question.
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Earn 800 a month. Spend 10% of her monthly budget in clothes and food, how mUchiha does she spend on clothes and food
BabaBlast [244]
10% means for every 100 she spend 10
in 800 there are 8 100 thus she speds 80
or 10% to decimal form is
\frac{10}{100}  =  \frac{1}{10}
800 \times  \frac{1}{10}  =  \frac{800}{10}  = 80
3 0
4 years ago
A father is 60 years old and his son is half his age. How old was the boy when his father was four times his age?
Archy [21]
He would be 120 yrs old because 60 times 4 is 240 and the son is half of his age so 240 divided by 2 is 120 hope this helped
5 0
3 years ago
Read 2 more answers
It has been decided that 100 people need to be surveyed to decide the publics opinion on a school building project. A student su
Morgarella [4.7K]

Answer:

The proposed way of sampling is a biased way to perform the survey.

Step-by-step explanation:

Convenience sampling is a kind of non-probability sampling method that comprises of the sample being taken from that portion of the population that is near to hand.  In this type of sampling method, all items doesn’t have an equivalent chance of being selected, which doesn’t comprises of random collection of items.

Convenience sampling is where we take in items which are easy to reach.

Convenience sampling consists of selection bias, i.e.e the bias involved in the sample due to inappropriate selection procedures.

For example, randomly selecting 4 people sitting near him to guesstimate the mean age of the class is a convenience sampling example. or gathering information on customer satisfaction by interviewing 6 randomly selected customers from a local store is an illustration of convenience sampling.

In this case, the sample suggested by the students consists of surveying the first 100 people who enter the school, about the public opinion on a school building project.

This is an example of convenience sample.

So, there is a selection bias present in the sample.

Thus, the proposed way of sampling is a biased way to perform the survey.

4 0
4 years ago
What is the equation of the parabola with focus (4,1) and directrix y= 2?
mariarad [96]
It’s A I think I had it on a recent test :) I’m not sure tho
8 0
3 years ago
To the nearest tenth of a cent, find the cost per ounce of a 15 oz. box of cereal costing $2.49.
Molodets [167]
Answer: $2.50

for rounding to the tenths, look at the hundredths place and if it is more than 5 round up :)
6 0
3 years ago
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