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iren [92.7K]
3 years ago
14

What is (x+3)(2x-4) in the form of ax²+bx+c?

Mathematics
2 answers:
fenix001 [56]3 years ago
5 0

FOIL

first = x*2x = 2x^2

outer = x*-4 = -4x

inner = 3 * 2x = 6x

last = 3 * (-4) = -12

add together

2x^2 -4x+6x-12

2x^2 +2x-12

Ratling [72]3 years ago
4 0

Answer:

2x^2+2x-12

Step-by-step explanation: If you like my answer be sure to give me a good rating!


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The diameter of a circle is 4cm. Find it area to nearewt tenth.​
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Answer:

12.6cm

Step-by-step explanation:

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2 years ago
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{f(x)=2x+1 g(x)=x2+2x−8
n200080 [17]

The value of g(x) = 2[f(x)]² - 1 is g(x) = 8x² + 8x + 1

<h3>How to find a function?</h3>

f(x) = 2x+1

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g(x) = 2[f(x)]² - 1

Hence,

g(x) = 2[2x + 1]² - 1

g(x) = 2[4x² + 4x + 1] - 1

g(x) = 8x² + 8x + 2 - 1

g(x) = 8x² + 8x + 1

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8 0
2 years ago
Help please, finals week is upon me​
kenny6666 [7]

The circumcenter is found by finding the intersection of at least 2 perpendicular bisector segments.

Find the perpendicular bisector to segment AB. This is the line y = -3.5; the idea is that you find the equation of the horizontal line through the midpoint of AB. The midpoint has a y coordinate of -3.5. This line is shown in red horizontal line in the attached image below.

The midpoint of AC is 2.5, so the perpendicular bisector to AC is x = 2.5 which is shown as the vertical green line in the same diagram.

The red and green lines cross at the location (2.5, -3.5) which is the circumcenter's location. If you were to draw a circle through all three points A, B, & C, then this circle would be centered at (2.5, -3.5)

If point D is the circumcenter, then we know this

AD = BD = CD

basically the distance from the center to any point on the triangle is the same. This is due to the fact that all radii of the same circle are the same length.

<h3>Answer: (2.5, -3.5)</h3>

note: 2.5 in fraction form is 5/2 while -3.5 in fraction form is -7/2

6 0
3 years ago
<img src="https://tex.z-dn.net/?f=f%28x%29%20%3D%20%7Bx%20-%201%7D%5E%7B2%7D%20%20-%204" id="TexFormula1" title="f(x) = {x - 1}^
Hoochie [10]

Answer: x = 5

Step-by-step explanation:

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2 years ago
What is the difference, in meters, between the length of the longest line and the length of the shortest line?
ivolga24 [154]

Answer:

Range = 3.169m

Step-by-step explanation:

Given

See attachment for complete question

Required

Determine the difference between the shortest and the longest

This question implies that we calculate the range.

Range = Longest - Shortest

From the table, we have:

Longest = 8.7m

Shortest = 5.531m

So, we have:

Range = 8.7m- 5.531m

Range = 3.169m

5 0
2 years ago
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