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2 years ago

What is the polynomial function in standard form of f(x)=2-11x 2x²

Mathematics

1 answer:

vlabodo [156]2 years ago

4 0

Standard form is f(x)=ax^2+bx+c
order of power
f(x)=2x^2-11x+2

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There was an activity planned outdoors, but it started to rain. They took a vote and 45 people of the 60 people wanted to stay i

Elza [17]

Answer:

15/60×100=25%

Step-by-step explanation:

the number of students wanted to go outside/the whole number of students×100

15/60×100=25%

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2 years ago

Four students are determining the probability of flipping a coin and it landing head's up. Each flips a coin the number of times

Oxana [17]

Answer:

Collin

Step-by-step explanation:

He did the most attempts.

The probability of flipping a coin is 1/2

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3 years ago

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2 The diagram shows a

Strike441 [17]

Diagram? There is no diagram given.

$i = \frac{180(n - 2)}{n}$

$i = \frac{180(12 - 2)}{12} = \frac{180(10)}{12} = \frac{1800}{12} \\ i = 150\degree$

Cannot solve b without the diagram.

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2 years ago

Please help it's due in a few minutes.

Oksanka [162]

The answer would be 1/3 right?

3 0

2 years ago

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A Ferris wheel has a radius of 10 m, and the bottom of the wheel passes 1 m above the ground. If the Ferris wheel makes one comp

Morgarella [4.7K]

Answer:

$y = 11 - 10cos(0.1\pi t)$

Step-by-step explanation:

Suppose at t = 0 the person is 1m above the ground and going up

Knowing that the wheel completes 1 revolution every 20s and 1 revolution = 2π rad in angle, we can calculate the angular speed

2π / 20 = 0.1π rad/s

The height above ground would be the sum of the vertical distance from the ground to the bottom of the wheel and the vertical distance from the bottom of the wheel to the person, which is the wheel radius subtracted by the vertical distance of the person to the center of the wheel.

$y = h_g + d_b = h_g + R - d_c$ (1)

where $h_g = 1$ is vertical distance from the ground to the bottom of the wheel, $d_b$ is the vertical distance from the bottom of the wheel to the person, R = 10 is the wheel radius, $d_c$ is the vertical distance of the person to the center of the wheel.

So solve for $d_c$ in term of t, we just need to find the cosine of angle θ it has swept after time t and multiply it with R

$d_c = Rcos(\theta(t)) = Rcos(\omega t) = 10cos(0.1\pi t)$

Note that $d_c$ is negative when angle θ gets between π/2 (90 degrees) and 3π/2 (270 degrees) but that is expected since it would mean adding the vertical distance to the wheel radius.

Therefore, if we plug this into equation (1) then

$y = h_g + R - d_c = 1 + 10 - 10cos(0.1\pi t) = 11 - 10cos(0.1\pi t)$

7 0

2 years ago