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Nina [5.8K]
4 years ago
15

What the algebraic rule for a dilation with a scale factor of 3

Mathematics
1 answer:
Marianna [84]4 years ago
7 0

Step-by-step explanation & answer:

When a dilation in the coordinate plane has the origin as the center of dilation, we can find points on the dilated image by multiplying the x and y coordinates of the original figure by the scale factor.

For example, if the scale factor is "k", the algebraic representation of the dilation is

(x, y) → (kx, ky)

For enlargements, k > 1 and for reductions, k < 1.

Hope this is what you needed:)

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A square rotated about its center by 360º maps onto itself at (blank) different angles of rotation. You can reflect a square ont
adell [148]
The answer is invalid to the quetion
6 0
3 years ago
A line passes through the point (-4,3) and has a slope of -5/2
Jlenok [28]

Answer:

y=(-5/2) x -7

Step-by-step explanation:

y=mx+b

m=(-5/2)

To find b:

3=(-5/2)times"x" + b

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7 0
3 years ago
1. Rodrigo has a ladder that is 13 ft long. The ladder is leaned against a vertical wall. The top of the ladder is 10.8 ft above
PtichkaEL [24]

Answer:

As per the given condition:  Rodrigo has a ladder that is 13 ft long. The ladder is leaned against a vertical wall. The top of the ladder is 10.8 ft above the ground.

The Orientation of the ladder with the wall forms a right triangle.  

The ladder length is the hypotenuse of the triangle,

the distance between the ladder at ground level and the base of the wall is the horizontal leg of the triangle,

and the height of the ladder is the vertical leg of the triangle.

⇒ Height of the ladder = 10.8 ft and hypotenuse = 13 ft

Using sine ratio formula;

\sin \theta = \frac{\text{Opposite side}}{\text{Hypotenuse side}}

Opposite side = height of the ladder = 10.8 ft and

Hypotenuse side = 13 ft.

then;

\sin \theta = \frac{10.8}{13} =0.830769230769

or

\theta = \sin^{-1}(0.830769230769)

Simplify:

\theta = 56.2^{\circ} (nearest to tenth place)

Since, it is given that the angle the ladder makes with the ground needs to be 60 degree or less for safety purposes.

(a)

Yes, this ladder in a safe position.

as \theta = 56.2^{\circ} < 60^{\circ}

(b)

You can see the diagram as shown below in the attachment.





8 0
3 years ago
Which equation represents a proportional relationship?
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Y=-5(x+1) is proportional you can simply find this out by going to desmos and it’ll allow you to input an equation and you can see how it aligns
6 0
3 years ago
Why is it useful to rewrite a formula in terms of another variable?
Mazyrski [523]
<u>It is useful so that you can show your work and know you are getting the correct answer</u>
7 0
3 years ago
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