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jarptica [38.1K]
3 years ago
9

Add (2x^3+5x−16)+(4x^3−10x^2−2x)

Mathematics
1 answer:
creativ13 [48]3 years ago
6 0

Answer:

Hi there!

Your answer is:

6x^3 -10x^2 +3x -16

Step-by-step explanation:

2x^3 +5x -16 +4x^3 -10x^2 -2x

Combine like terms

6x^3 -10x^2 +3x -16

Hope this helps!

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PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!!
Kitty [74]

Answer:   (-2, 5) and (2, -3)

<u>Step-by-step explanation:</u>

Graph the line y = -2x + 1 (which is in y = mx + b format) by plotting the y-intercept (b = 1) on the y-axis and then using the slope (m = -2) to plot the second point by going down 2 and right 1 unit from the first point:

        y - intercept = (0, 1)            2nd point = ( -1, 1).

Graph the parabola y = x² - 2x - 3 by first plotting the vertex and then plotting the y-intercept (or some other point):

y = x^2-2x-3\quad \rightarrow \quad a=1,\ b=-2,\ c=-3\\\\\text{axis of symmetry:}\ x = \dfrac{-b}{2a}\ \longrightarrow \ x=\dfrac{-(-2)}{2(1)}=\dfrac{2}{2}=1\\\\\text{y-value of vertex:}\ f(1) = (1)^2-2(1)-3\quad \longrightarrow \quad y = 1 - 2 - 3=-4\\\\\text{y-intercept:}\ f(0)= (0)^2-2(0)-3\ \longrightarrow \ y=0 - 0 - 3 = -3 \\

         vertex = (1, -4)                2nd point (y-intercept) = (0, -3)


<em>see attached</em> - the graphs intersect at two points:  (-2, 5) and (2, -3)


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3 years ago
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Answer:

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Step-by-step explanation:

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3 years ago
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Answer:

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Step-by-step explanation:

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70 - 2b = 28 + 5b

You could solve this manually, but Desmos graphing calculator is faster. Simply type this in and replace b with x and it will give you the answer, which is 6. Hope this helps!

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3 years ago
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How do you find the area of a trapezoid?
tiny-mole [99]
Area= base + base / 2 then multiply the height.

Example:  6+7 /2*6=  39


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3 years ago
allen was making trail mix but he only wanted to make 1/3 of the recipe if the whole recipe called for 1/2 of a cup of peanuts h
padilas [110]

Answer:

the last one 1/6

Step-by-step explanation:

1/2 x 1/3 = 1/6

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