How to calculate square footage of a room?

Mathematics

1 answer:

kenny6666 [7]2 years ago

3 0

You take the height times the width

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Find the polynomial equation of least degree with roots -1, 3, and (+/-)3i

jasenka [17]

Each of these roots can be expressed as a binomial:

(x+1)=0, which solves to -1
(x-3)=0, which solves to 3
(x-3i)=0 which solves to 3i
(x+3i)=0, which solves to -3i
There are four roots, so our final equation will have x^4 as the least degree

Multiply them together. I'll multiply the i binomials first:
(x-3i)(x+3i) = x²+3ix-3ix-9i²
x²-9i²
x²+9 [since i²=-1]

Now I'll multiply the first two binomials together:
(x+1)(x-3) = x²-3x+x-3
x²-2x-3
Lastly, we'll multiply the two derived terms together:

(x²+9)(x²-2x-3) [from the binomial, I'll distribute the first term, then the second term, and I'll stack them so we can simply add like terms together]

x^4 -2x³-3x²
<u> +9x²-18x-27</u>
x^4-2x³+6x²-18x-27

7 0

3 years ago

2- 5x=-13 how do u solve this

kenny6666 [7]

2 - 5x = -13
-2 -2
---------------
-5x = -15
/-5 /-5
-------------
x = 3

Hope this helps!

6 0

2 years ago

PLEASE HELP ME I GIVE 20 POINTS AND BRAINLIST TO WHOEVER HELPS ME FIRSTS

Nina [5.8K]

Answer:

3712

Step-by-step explanation:

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3 years ago

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Please help ASAP ! I’ll mark as brainlest if you explain

Varvara68 [4.7K]

Answer:

49.5square units

Step-by-step explanation:

one over two times 11times9 you will get 99over two you divide then you get the answer

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3 years ago

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Which is a right triangle formed using a diagonal through the interior of the cube?

charle [14.2K]

Draw the given answers to determine the correct solution.

ΔABE is correct because it is a right triangle through a diagonal
ΔABD is incorrect because it does not go through diagonals.
ΔADH is incorrect because it does not go through diagonals.
ΔACE is incorrect because it does not go through the interior of the cube.

Answer: ΔABE

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3 years ago

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