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Len [333]
4 years ago
14

Geometry help?? 15-18 please

Mathematics
2 answers:
BARSIC [14]4 years ago
7 0
18-15 is 3 the answer is 3
yawa3891 [41]4 years ago
3 0
I would say that the answer is three
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It is true. I was recently doing this in class
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Rzqust [24]

Answer:

\left(x^3+2x^2-3x-1\right)+\left(4-x-x^3\right)=2x^2-4x+3

Step-by-step explanation:

To write any polynomial in standard form, you look at the degree of each term. You then write each term in order of degree, from highest to lowest, left to write.

To add the polynomials you need to:

Remove parentheses

\left(x^3+2x^2-3x-1\right)+\left(4-x-x^3\right)=x^3+2x^2-3x-1+4-x-x^3

Group like terms

\left(x^3+2x^2-3x-1\right)+\left(4-x-x^3\right)=x^3-x^3+2x^2-3x-x-1+4

Add similar elements

\left(x^3+2x^2-3x-1\right)+\left(4-x-x^3\right)=2x^2-3x-x-1+4\\\left(x^3+2x^2-3x-1\right)+\left(4-x-x^3\right)=2x^2-4x-1+4\\\left(x^3+2x^2-3x-1\right)+\left(4-x-x^3\right)=2x^2-4x+3

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Find the value of x. Round to the nearest tenth
levacccp [35]

Answer:

70.5

Step-by-step explanation:

Refer to attached image

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Step-by-step explanation:

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Solve –x + 2y = 12 x + 6y = 20 using the elimination method. (4, 4) (0, 6) (-12, 0) (-4, 4)
coldgirl [10]
<span>–x + 2y = 12
x + 6y = 20
------------------add
8y = 32
y = 32/8 
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</span>–x + 2y = 12
–x + 2(4) = 12
-x = 12 -8
x = -4 

answer: <span>(-4, 4)</span>
7 0
4 years ago
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