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Inessa05 [86]
3 years ago
15

Is height always a statistical subject

Mathematics
1 answer:
Maru [420]3 years ago
8 0

Answer:

It Is!

Step-by-step explanation:

"For example, “How old am I?” is not a statistical question, but “How old are the students in my school?” is a statistical question because one anticipates variability in students' ages."

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Write a quadratic equation with the given roots. Write the equation in the form of ax^2+bx+c=0 where a b and c are integers
Bas_tet [7]

You haven't provided the required roots, but I can tell you how to do this kind of exercises in general.

If the x^2 coefficient is 1, i.e. the equation is written like x^2+bx+c=0, then you can say the following about the coefficients b and c:

  • b is the opposite of the sum of the roots
  • c is the multiplication of the roots.

So, for example, if we want an equation whose roots are 4 and -2, we have:

  • 4+(-2) = 4-2 = 2 \implies b = -2
  • 4 \cdot (-2) = -8 \implies c = -8

So, the equation is x^2-2x-8=0

If your roots are rational, you can work like this: suppose you want an equation with roots 3/4 and 1/2. You have:

  • \dfrac{3}{4}+\dfrac{1}{2} = \dfrac{3}{4}+\dfrac{2}{4} = \dfrac{5}{4} \implies b = -\dfrac{5}{4}
  • \dfrac{3}{4} \cdot \dfrac{1}{2} = \dfrac{3}{8} \implies c = \dfrac{3}{8}

And so the equation is

x^2 - \dfrac{5}{4} + \dfrac{3}{8} = 0

In order to have integer coefficients, you can multiply both sides of the equation by 8:

8x^2 - 10 + 3 = 0

5 0
3 years ago
Simplify the given expression below: 2 divided by the quantity of 2 plus 5i
kodGreya [7K]
<span>Remove the imaginary from the denominator.
</span>\frac{2}{2 + 5i}
( \frac{2}{2 + 5i} )( \frac{2 - 5i}{2 - 5i} )
\frac{2(2 - 5i)}{(2 + 5i)(2 - 5i)}
\frac{4 - 10i}{4 - 10i + 10i - 25 i^{2} }  i^{2} = -1
\frac{4 - 10i}{4 + 25}
\frac{4 - 10i}{29}<span>

</span>
8 0
4 years ago
Write a number less than 50 that has at least six factors.
pentagon [3]

Answer:

the number can be 12

1 x 12 = 12

2 x 6 = 12

3 x 4 = 12

5 0
3 years ago
Please need help on this
ser-zykov [4K]

Answer: In my answer I got 9 because the formula to find the area it would be A=1/2b*h



Step-by-step explanation: How would you do this?

Well we know that the base equals 6 we have heighth so we would have to do 1.5*6 and that would give us 9 but if we round it would be 10 because 9 is closer to 10 than it is to 0.


thanks :)


4 0
4 years ago
Mrs.Traynor's class is taking a field trip to the zoo.The trip cost $26 for each student.There are 22 students in her class.
kow [346]
So they said each is $26 and students is 22
like you need to do multiply 26*22=572
so she get $572 for 22 students.
3 0
3 years ago
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