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Lady bird [3.3K]
4 years ago
8

Can you answer this​

Mathematics
1 answer:
Dominik [7]4 years ago
7 0

Answer:

A.) 6a=2(p+3q)

Step-by-step explanation:

Given: p=3(a-q); solve for 6a.

If we want to solve for 6a, we need to know what the value for a is. To do that, we need to isolate a on one side of the equal sign. Before we even do that, let's distribute this problem out.

p=3a-3q

Now, let's move 3a to the left side of the equation.

-3a+p=-3q

Let's move p over so we have the a on one side of the equation.

-3a=-p-3q

To solve for a, we need to take off the coefficient that is on a (-3.) To do this, divide everything by -3.

a=\frac{p}{3}+q

Now, we know what the value of a is. To find the value of 6a, multiply everything by 6.

6a=\frac{6p}{3}+6q

Simplify.

6a=2p+6q

Factor.

6a=2(p+3q)

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3 years ago
A car ride is drawn on a coordinate plane so that the first card is located at the point by (5,10) what are the coordinates of t
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Answer:

There are two possible solutions:

Clockwise rotation

P'(x,y) = (-10,5)

Counterclockwise rotation

P'(x,y) = (10, -5)

Step-by-step explanation:

There are two possible answers: (i) Clockwise rotation, (ii) Counterclockwise rotation. Vectorially speaking, rotation of point of rotation of a point about another point of reference is defined by:

P'(x,y) = O(x,y) + r_{OP}\cdot (\cos (\theta_{OP}\pm \theta'),\sin (\theta_{OP}\pm \theta')) (1)

Where:

O(x,y) - Point of reference.

r_{OP} - Length of the segment OP.

\theta_{OP} - Direction of segment OP, measured in sexagesimal degrees.

\theta ' - Angle of rotation, measured in sexagesimal degrees.

Please notice that clockiwise rotation occurs when \theta = \theta_{OP}-\theta' and counterclockwise rotation when \theta = \theta_{OP}+\theta'. In addition, we define length and direction of the segment below:

r_{OP} = \sqrt{(x_{P}-x_{O})^{2}+(y_{P}-y_{O})^{2}} (1)

\theta_{OP} = \tan^{-1} \frac{y_{P}-y_{O}}{x_{P}-x_{O}}

If we know that x_{O} = y_{O} = 0, x_{P} = 5, y_{P} = 10 and \theta' = 270^{\circ}, then the coordinates of the first car after rotation is:

r_{OP} = \sqrt{(5-0)^{2}+(10-0)^{2}}

r_{OP} \approx 11.180

Please notice that original point is located at first quadrant of the Cartesian plane centered at origin, then the direction of the segment OP is:

\theta_{OP} = \tan^{-1} \frac{10-0}{5-0}

\theta_{OP} \approx 63.435^{\circ}

The two solutions are finally presented:

Clockwise rotation

P'(x,y) = (0,0) + 11.180\cdot (\cos (-206.565^{\circ}),\sin (-206.565^{\circ}))

P'(x,y) = (-10,5)

Counterclockwise rotation

P'(x,y) = (0,0) + 11.180\cdot (\cos (333.435^{\circ}),\sin (333.435^{\circ}))

P'(x,y) = (10, -5)

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