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user100 [1]
3 years ago
10

I need help plz answer as soon as possible

Mathematics
1 answer:
Gekata [30.6K]3 years ago
4 0

Answer:

x = 7

Step-by-step explanation:

Let's join A & C . If points A ,B & C are collinear , then definitely B point's gonna lie on line segment AC .

So , AC = AB + BC

In the question , length of AC = 3x + 3 , length of AB = 2x - 1 ( or -1 + 2x)

& length of BC = 11.

We know that AC = AB + BC . So putting the given values here :-

3x+3 = 2x -1 + 11\\=>3x +3 = 2x+10\\

Solving this linear eqn. gives

3x + 3=2x+10\\=> 3x-2x=10-3\\=>x=7

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Consider an arbitrary ellipse x 2 a 2 + y 2 b 2 = 1. (Assume a, b > 0.) (a) Find a parametrization of the ellipse using the d
uysha [10]

Answer:

α(t) = (-a*Sin(t), b*Cos (t))    where t ∈ [0, 2π]

Step-by-step explanation:

Given an arbitrary ellipse (x²/a²) + (y²/b²) = 1       (a, b > 0)

The parametrization can be as follows

x = -a*Sin(t)

y = b*Cos (t)

then

α(t) = (-a*Sin(t), b*Cos (t))    where t ∈ [0, 2π]

If  t = 0

α(0) = (-a*Sin(0), b*Cos (0)) = (0, b)

If  t = π/2

α(π/2) = (-a*Sin(π/2), b*Cos (π/2)) = (-a, 0)

If  t = π

α(π) = (-a*Sin(π), b*Cos (π)) = (0, -b)

If  t = 3π/2

α(3π/2) = (-a*Sin(3π/2), b*Cos (3π/2)) = (a, 0)

If  t = 2π

α(2π) = (-a*Sin(2π), b*Cos (2π)) = (0, b)

We can see the sketch in the pic.

7 0
3 years ago
Read 2 more answers
Which expression is the simplest form of...
Lemur [1.5K]

Answer:

The answer is option A

Step-by-step explanation:

<h3>( {x}^{ -  \frac{4}{7} } )^{7}</h3>

Using the rules of indices

That's

<h3>( { {a}^{x} })^{y}  =  {a}^{x \times y}</h3>

Simplify the expression

We have

<h3>( { {x}^{ -  \frac{4}{7} } })^{7}  =  {x}^{ -  \frac{4}{7} \times 7 }   \\  =  {x}^{ - 4}</h3>

Again using the rules of indices

That's

<h3>{x}^{ - y}  =  \frac{1}{ {x}^{y} }</h3>

The final answer is

<h3>\frac{1}{ {x}^{4} }</h3>

Hope this helps you

5 0
3 years ago
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patriot [66]
Radius is half of the diameter so the radius of 4 is 2
4 0
3 years ago
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Please explain how to do this!
irakobra [83]
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5 0
3 years ago
What is the measure of x?​
victus00 [196]

Answer: x = 156°

Step-by-step explanation:

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85+71= 156

180-156=24°

but since you are trying to find x (to create the straight angle) and now know the other missing angle is 24°

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x=156°

8 0
2 years ago
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