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mixer [17]
3 years ago
10

Is y=x(x-1) a function

Mathematics
2 answers:
arsen [322]3 years ago
7 0

Answer:

Yes.

Step-by-step explanation:

y = x(x - 1) is a function.

If we draw a graph of the  expression  we get a parabola  which is shaped  like a U.

The graph passes the vertical line test for s function (that is -  any vertical line drawn through the curve passes through the curve at only one point).

Fed [463]3 years ago
4 0
Yes it is a function
Y=x(x-1)
X(x-1)
X to the 2nd power -1x
Hope that’s helps
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If 400 students at the school took the SAT, how many scored in the 1301 to 1600 range?
harina [27]

Answer:

56 students scored in the range of 1301 to 1600.

Step-by-step explanation:

The given question is without any figure or attachment. Here is the figure attached with the answer.

In the figure attached,

total number of students who took SAT = 400

Percentage of the students who scored 1301 to 1600 range = 14% (given in the pie chart)

Total number of students who are in this range = 14% of total number of students

= 400\times\frac{14}{100}

= 56

Therefore, 56 students scored in the range of 1301 to 1600.

4 0
2 years ago
What is the value of the digit 7 in 870,541
faust18 [17]
The value of 7 in 870,541 is 10,000
3 0
3 years ago
100/60 is exactly 1.66666666667. When I do long division my answer comes up as 1.6 with the decimal repeating, am I doing anythi
goblinko [34]

Answer:

I don't think you are doing anything wrong. Just ignore it and write the repeating decimal. If you're asked to do it, round it up instead.

5 0
3 years ago
Read 2 more answers
Which expression is a prime polynomial?
irakobra [83]

The expression that is a prime polynomial is:

B. x^3 - 27y^2.

<h3>What is a prime polynomial?</h3>

A prime polynomial is a polynomial that cannot be factored.

In this problem, item b gives a prime polynomial, as:

  • In item a, 3 is a common factor, hence the polynomial can be factored.
  • In item c, x is a common factor, hence the polynomial can be factored.
  • In item d, the polynomial can be factored according to it's roots.

More can be learned about prime polynomials at brainly.com/question/26388060

#SPJ1

4 0
2 years ago
Nielsen ratings are based on televisions in 50005000 households. Nielsen estimates that 12 comma 00012,000 people live in these
avanturin [10]

Answer:

We are 95% confident that the true proportion of TV audience is between 65.15% and 65.85%

Step-by-step explanation:

-From the given information, \hat p=0.65.

-We calculate the confidence interval using this value at 95% confidence level:

CI=\hat p\pm z \sqrt{\frac{\hat p(1-\hat p)}{n}}\\\\\\=0.65\pm 1.96\times \sqrt{\frac{0.65\times 0.35}{12000}}\\\\\\=0.65\pm 0.0085\\\\\\=[0.6415,0.6585]

So, the 95% confidence interval is (0.6515,0.6585).

Hence, we are 95% confident that the true proportion of TV audience is between 65.15% and 65.85%.

6 0
3 years ago
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