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IRISSAK [1]
3 years ago
8

Find the sum 2n^3 +4n^2-7 and -n^3-8n-2

Mathematics
2 answers:
Valentin [98]3 years ago
8 0

Answer:

n^{3}+4n^{2}-8n-9

Step-by-step explanation:

The only thing that you have to do is to add the different terms that have the same exponent and the same algebraic term.

2n^{3} -n^{3}= n^{3}

4n^{2}

-8n

-7 -2= -9

After adding up the different terms:

n^{3}+4n^{2}-8n-9

Dominik [7]3 years ago
7 0

Answer:

top of fraction: -2(n^8+2)(n^3+8n+2)

bottom of fraction: n^5

Step-by-step explanation:

use PEMDAS for the first part of the equation, then for the other half multiply it by -1, then pull them back into the equation and solve, and you should get the answer above the way i did it, if not then hope you find another person who is correct, remember i'm a student as well i'm not perfect


-Deuce

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Answer:

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Step-by-step explanation:

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3 years ago
What is the equation for the graph that is shown?
KIM [24]

Answer:

y = (2/3)x + 4

Step-by-step explanation:

(Step 1)

Pick two points from the line.

Point 1: (0,4)

Point 2: (-6, 0)

(Step 2)

Use the point-slope formula to calculate the slope(m) of the line. This equation requires the input of the "x" and "y" values from the points.

y₁ - y₂ = m(x₁ - x₂)                      <----- Point-slope form

4 - y₂ = m(0 - x₂)                       <---- Plug in "x" and "y" values from Point 1

4 - 0 = m(0 - (-6))                      <---- Plug in "x" and "y" values from Point 2

4 = m(6)                                    <---- Simplify left side and parentheses

2/3 = m                                     <---- Divide both sides by 6

(Step 3)

Use the slope-intercept formula to calculate the y-intercept of the line. This equation requires the input of one of the point's "x" and "y" values and the slope.

y = mx + b                                  <---- Slope-intercept form

y = (2/3)x + b                             <---- Plug (2/3) in for "m"

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4 = b                                          <---- Multiply

(Step 4)

Now you have the necessary values to determine the equation of the graph. Substitute the values for "m" and "b" into the slope-intercept formula to find the final answer.

m = 2/3

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y = (2/3)x + 4

7 0
2 years ago
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Answer:

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Step-by-step explanation:

NOTE :

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