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Katyanochek1 [597]
4 years ago
9

1. The expression x3+3x2+x-5 represents the total length across the front of the mansion. Find the length of side I. Show all wo

rk. X will stay a variable and your answer will be a polynomial.

Mathematics
1 answer:
Lubov Fominskaja [6]4 years ago
3 0
Given that t<span>he expression x^3+3x^2+x-5 represents the total length across the front of the mansion. Let the length of side I be a, then

x^4-2x^3+x-10+a-x^3+5x^2+2=x^3+3x^2+x-5 \\  \\ \Rightarrow a=x^3+3x^2+x-5-x^4+2x^3-x+10+x^3-5x^2-2 \\  \\ =\bold{-x^4+4x^3-2x^2+3}</span>
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sergey [27]

Answer:

1) (-3,-2)

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Step-by-step explanation:

1) The vertex of a parabola is the turning point that is the minimum or maximum of the graph, based on the shape of the parabola. In this case, the vertex is the minimum. By looking at the coordinate points, we can tell that the minimum value where the graph changes the direction is at (-3,-2).

2) The line of symmetry is the line on the graph that cuts the shape exactly in half. This means that if you were to fold the graph along this line, the two sides would be identical. All parabolas have a line of symmetry and it always matches the vertex. The equation for the line of symmetry will be x= whatever the x-value of the vertex is. So, for this graph, the line of symmetry is x=-3.

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3 years ago
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nikdorinn [45]

Answer:

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4 years ago
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LenaWriter [7]
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3 years ago
Given: ABCD is a trapezoid, AB = CD, BK ⊥ AD, AK = 10, KD = 20 Find: BC AD
alexdok [17]

Answer:

<u> BC = 10 and AD = 30</u>

Step-by-step explanation:

In figure-1 , AB = CD ,BK ⊥ AD,  AK = 10,  KD = 20.

Since, line AD is sum of AK and  KD, then

AD = AK + KD

AD = 10 + 20

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so, BC = KL and AK = LD

KL = AD - LD

KL = 20 - 10

KL = 10

Since, BC = KL then BC = 10

Hence, <u> BC = 10 and AD = 30</u>

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