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andrew11 [14]
3 years ago
5

PLEASE HELP ME!! Show all work. Must be in standard form. Simplify (3x^2+4x-7)-9x^2-x+3)

Mathematics
1 answer:
elena-14-01-66 [18.8K]3 years ago
7 0
I think this is the answer

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Is 51x51 is even or odd
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You can predict that it's odd because the end of the 2 numbers is 1 and 1 x 1 is 1 and one is an odd number. (answer is odd)
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D. Write a system of two linear equations that has more than one solution.
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D. y=5x+6 and 2y-12-10x=0 has infinitely many solutions and both lines are linear

E. y=4x+1, y=9x+4 has the solutions x = -3/5, y = -7/5


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What is the volume of the sphere in the diagram? with a diameter of 3
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Answer:

Given diameter: r = d / 2 , Given area: r = √[A / (4 * π)] , Given volume: r = ³√[3 * V / (4 * π)] , Given surface to volume ratio: r = 3 / (A/V) .

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So, do that!

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3 years ago
What’s is part A?? .....
bixtya [17]

Answer:

A. 3

B. 4

C. 1

D. 2

Step-by-step explanation:

Consider all equations:

A. y=x^2 -6x+8

This is the equation of parabola with vertex at point

x_v=\dfrac{-b}{2a}=\dfrac{-(-6)}{2\cdot 1}=3\\ \\y_v=3^2-6\cdot 3+8=9-18+8=-1

The y-intercept is at point

x=0\\ \\y=0^2-6\cdot 0+8=8

Since

x^2 -6x+8=x^2-4x-2x+8=x(x-4)-2(x-4)=(x-2)(x-4),

the x-intercepts are at points (2,0) and (4,0)

The leading coefficient is 1 > 0, then the parabola opens upwards.

Hence, the graph of this parabola is 3.

B. y=(x-6)(x+8)

This parabola has two x-intercepts at points (6,0) and (-8,0).

The leading coefficient is 1 > 0, then the parabola opens upwards.

The only possible choice is parabola 4.

C. y=(x-6)^2+8

This parabola has the vertex at point (6,8), opens upwards, therefore does not intersect the x-axis.

The graph of this parabola is 1.

D. y=-(x+8)(x-6)

This parabola has two x-intercepts at points (6,0) and (-8,0).

The leading coefficient is -1 > 0, then the parabola opens downwards.

The only possible choice is parabola 2.

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3 years ago
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Hows everyone doing. rate your mood from 1-10
earnstyle [38]

Answer:

10!

Step-by-step explanation:

Because I ate chicken nuggets!

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