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3 years ago

ОА.

Mathematics

1 answer:

horsena [70]3 years ago

8 0

Answer:

a 90° counterclockwise rotation about the origin, and then a dilation by a scale factor of 2

Step-by-step explanation:

At Image I, we have vertex at point (3,-2), and the length of the left side is of 1 unit(from -2 to -3).

In the larger figure, this length is of 2 units, so the dilation has a scale factor of 2 units. The rotation, due to the coordinates changing, is of 90º counterclockwise(if it was across the x-axis, only the y coordinate would change, but on image II, both coordinates change).

So the correct answer is:

a 90° counterclockwise rotation about the origin, and then a dilation by a scale factor of 2

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4 years ago

Factor x square + 10x+25

AysviL [449]

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(x+5) (x+5)

Step-by-step explanation:

1) You need to find two numbers that multiply to give you 25 but add up to 10.

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3 years ago

inysia [295]

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3 years ago

Read 2 more answers

<img src="https://tex.z-dn.net/?f=a%5E%7B2%7D%20%20-%20b%20%5E%7B2%7D%20%20%2B%204b%20%20-%204" id="TexFormula1" title="a^{2} -

Radda [10]

Answer:

$\left(a+b-2\right)\left(a-b+2\right)$

Step-by-step explanation:

$a^2-b^2+4b-4$

$a^2-\left(b^2-4b+4\right)$

$a^2-(b^2-2b-2b+4)$

$a^2-\left(b-2\right)\left(b-2\right)$

$a^2-\left(b-2\right)^2$

Apply the difference of two squares formula.

$x^2-y^2=(x+y)(x-y)$

$\left(a+\left(b-2\right)\right)\left(a-\left(b-2\right)\right)$

$\left(a+b-2\right)\left(a+2-b\right)$

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3 years ago

Answer and explanation please?

nignag [31]

The answer would be A. m= -3/5 and b=-4/5
"m= -5-1 divided by 7--3
or, -6/10
or, -3/5.

to find the (B)

(-3,1). y=mx+b or 1=-3/5 × -3+b, or solving for b: b=1-(-3/5)(-3). b=-4/5.(7,-5). y=mx+b or -5=-3/5 × 7+b, or solving for b: b=-5-(-3/5)(7). b=-4/5.See! In both cases we got the same value for b. And this completes our problem.

The equation of the line that passes through the points(-3,1) and (7,-5)isy=-3/5x-4/5"
Source: webmath

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3 years ago