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

Mathematics

2 answers:

Valentin [98]2 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]2 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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Nisha is looking out the window of her apartment building at a sculpture in a park across the street. The top of Nisha's window

White raven [17]

Answer: 128.67 feet

Step-by-step explanation:

Hi, since the situation forms a right triangle (see attachment) we have to apply the next trigonometric function.

Tan α = opposite side / adjacent side

Where α is the angle of depression from the top of Nisha's window to the bottom of the sculpture ,the opposite side is the height Nisha's window from the ground (60), and the adjacent side is the distance between the building and the sculpture (x).

Replacing with the values given:

Tan 25 = 60/x

Solving for x

x =60 / tan 25

x = 128.67 feet.

Feel free to ask for more if needed or if you did not understand something.