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torisob [31]
3 years ago
14

Look down below for question:

Mathematics
1 answer:
ale4655 [162]3 years ago
5 0
Area of ABC : AB*AC/2

the maximum of the parabola is reached at x=-4/(2*(-1))=2 hence A is at (2,0) and B is at (2,(-2)^2+4*2+C)=(2,12+C)

C is the second root (x-intersect), which we can find :

determinant1 : D=16-4*(-1)*C=4(4+C) thus the second root is at x=\frac{-4-\sqrt{4(4+C)}}{-2}=2+\sqrt{4+C}

Hence the area of the triangle is AB*AC/2=(4+C)*(2+\sqrt{4+C}-2)/2=(4+C)\sqrt{4+C}/2=32 hence (4+C)\sqrt{4+C}=64 .

We remark that 64=16*4=16*\sqrt{16}

Hence 4+C=16 thus C=12

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Answer:

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Step-by-step explanation:

A+B+C=180. sum of interior angles of a triangle

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What is the constant of proportionality for the relationship shown in this table
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Could somebody please help me find the answers for 'x' for these pictures?
lesya692 [45]

Answer:

Pic 1: x=31

Pic 2: x=20

Step-by-step explanation:

<u>Picture 1:</u>

<u />2x+x-3=90\\3x-3=90\\3x=93\\x=31

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<u>Picture 2:</u>

<u />7x+x+20=180\\8x+20=180\\8x=160\\x=20<u />

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2 years ago
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Help please anyone! Brainliest reward it counting on it!
Viefleur [7K]
X1 + x2  / 2 , y1 + y2 / 2

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Please Mark Brainliest if it helped
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Solve for the roots in simplest form using the quadratic formula:
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Step-by-step explanation:

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So √-5 = √5i and √-4 = 2i

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