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aliina [53]
3 years ago
5

Solve 1/X= 1/t + 1/n for X

Mathematics
1 answer:
umka21 [38]3 years ago
8 0
The answer is x = 2 that's what I think
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Select the correct answer.
mariarad [96]

Answer:

B.

f(x) and g(x) are closed under subtraction because when subtracted, the result will be a polynomial.

Step-by-step explanation:

f(x)-g(x)\\=(a_0+a_1x+a_2x^2...+a_nx^n)-(b_0+b_1x+b_2x^2...b_mx^m)

Assume m>=n WOLOG

=(a_0-b_0)+(a_1x-b_1x)+(a_2x^2-b_2x^2)+...+(a_nx^n-b_nx^n)-b_{(n+1)}x^{n+1}-...-b_{m-1}x^{m-1}-b_mx^m

=(a_0-b_0)+(a_1-b_1)x+(a_2-b_2)x^2+...+(a_n-b_n)x^n-b_{(n+1)}x^{n+1}-...-b_{m-1}x^{m-1}-b_mx^m

Are also a polynomial in general, but maybe in a different degree

Closure under subtraction means, for all polynomials, under the operation of subtraction, it also belongs to polynomials

6 0
2 years ago
The data below represent the number of desks in each math teacher's classroom
Yuki888 [10]

Answer:D

Step-by-step explanation:

7 0
3 years ago
Which equation represents a parabola that opens upward has a minimum at x=3 and has a line of symmetry at x=3
umka2103 [35]

Answer:

y=x^2-6x+5

Step-by-step explanation:

Let us consider the equation y=x^2-6x+5

For a quadratic equation in a standard form, y=ax^2+bx+c, the axis of symmetry is the vertical line x = \frac{-b}{2a}.

Here in this case we have, a=1, b=-6 , c =5

Putting the values we get,

x = \frac{-(-6)}{2\times 1} = \frac{6}{2} =3

We can see that the axis of symmetry is x=3 and the graph is giving minimum at x=3.

Therefore, the required equation is y=x^2-6x+5. Refer the image attached.


4 0
3 years ago
Read 2 more answers
Complete the square<br> x<br> 2<br> +<br> 8<br> x<br> +<br> 6
den301095 [7]

Answer:

2

+

8

+

6Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
A figure in the first quadrant is rotated 180° counterclockwise about the origin. In which quadrant will the rotated figure appe
Leni [432]
It will be in the 3rd quadrant.
5 0
3 years ago
Read 2 more answers
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