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steposvetlana [31]
3 years ago
10

Explain how to factor the following: 16x^2 – 40x – 24

Mathematics
1 answer:
Ivenika [448]3 years ago
6 0

Answer: (x-3)(2x+1)(8)

Step-by-step explanation: First factor out the 8 to get (8)(2x^2-5x-3). So now we have what number multiply out to -6 (ab) and add up to -5. -2 and -3 work out so we manipulate the equation like (8)(2x²-2x-3x-3). Factor out 2x in the first term and -3 in the second and keep going.

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Which equation represents a hyperbola with a center at (0, 0), a vertex at (−48, 0), and a focus at (50, 0)?
Lerok [7]

bearing in mind that "a" is the length of the traverse axis, and "c" is the distance from the center to either foci.

we know the center is at (0,0), we know there's a vertex at (-48,0), from the origin to -48, that's 48 units flat, meaning, the hyperbola is a horizontal one running over the x-axis whose a = 48.

we also know there's a focus point at (50,0), that's 50 units from the center, namely c = 50.


\bf \textit{hyperbolas, horizontal traverse axis } \\\\ \cfrac{(x- h)^2}{ a^2}-\cfrac{(y- k)^2}{ b^2}=1 \qquad \begin{cases} center\ ( h, k)\\ vertices\ ( h\pm a, k)\\ c=\textit{distance from}\\ \qquad \textit{center to foci}\\ \qquad \sqrt{ a ^2 + b ^2}\\ \textit{asymptotes}\quad y= k\pm \cfrac{b}{a}(x- h) \end{cases} \\\\[-0.35em] \rule{34em}{0.25pt}


\bf \begin{cases} h=0\\ k=0\\ a=48\\ c=50 \end{cases}\implies \cfrac{(x-0)^2}{48^2}-\cfrac{(y-0)^2}{b^2}=1 \\\\\\ c=\sqrt{a^2+b^2}\implies \sqrt{c^2-a^2}=b\implies \sqrt{50^2-48^2}=b \\\\\\ \sqrt{196}=b\implies 14=b~\hspace{3.5em}\cfrac{(x-0)^2}{48^2}-\cfrac{(y-0)^2}{14^2}=1\implies \cfrac{x^2}{48^2}-\cfrac{y^2}{14^2}=1

8 0
3 years ago
Read 2 more answers
How much liquids will the canna soda hold of food it is 6 inches tall and has a radius of 2 inches?( round to the nearest tenth)
Sphinxa [80]

Answer:

V = D. 75.4 in.³   (Answer D)

Step-by-step explanation:

The can volume is V = πr²h, which in this particular case is

V = π(2 in)²(6 in), or

V = D. 75.4 in.³   (Answer D)

6 0
3 years ago
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Write an equation of the line that passes through (2,-5) and is parallel to the line 2y=3x+10 .
abruzzese [7]

Answer:

2y = 3x + 10 --> almost there already, just divide everything by 2 to get y by itself. y = 3/2x + 5 --> now you have it in the y=mx + b form, so your slope is 3/2 They asked for the parallel line, remember parallel lines have the same slope, therefore you use the same slope.

6 0
2 years ago
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-9(x-1) = <br> HELP PLEASE
dsp73
It is -9x + 9.
Use the distribution property.
8 0
3 years ago
By how much is 7 more than 5​
VMariaS [17]

Answer:

2

Step-by-step explanation:

5 0
4 years ago
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