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AlexFokin [52]
3 years ago
9

Given a triangle JLM with vertices J(-4,3), L(-2,7), and M(2,7). What would the coordinates be if it was reflected across the li

ne y=1?
Mathematics
1 answer:
topjm [15]3 years ago
3 0

Answer: M'(2, - 5), L'(-2, -5), j'(-4, - 1)

Step-by-step explanation:

When we do a reflection over a given line, the distance between all the points (measured perpendicularly to the line) does not change.

The line is y = 1.

Notice that a reflection over a line y = a (for any real value a) only changes the value of the variable y.

Let's reflect the points:

J(-4, 3)

The distance between 3 and 1 is:

D = 3 - 1 = 2.

Then the new value of y must also be at a distance 2 of the line y = 1

1 - 2 = 1

The new point is:

j'(-4, - 1)

L(-2, 7)

The distance between 7 and 1 is:

7 - 1 = 6.

The new value of y will be:

1 - 6 = -5

The new point is:

L'(-2, -5)

M(2,7)

Same as above, the new point will be:

M'(2, - 5)

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ella [17]

Answer:

139

Step-by-step explanation:

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6 0
3 years ago
What is the power of x? <br> A) 2 <br> B) 3 <br> C) 6 <br> D) 7
Thepotemich [5.8K]

Answer:

A

Step-by-step explanation:

They are basically wanting the value of x.

These are 2 secant lines drawn. Secant Line is a line that intersects the circle at 2 points.

To solve this, we have to use secant-secant theorem.

Secant-Secant Power Theorem tells us that if 2 secant lines are drawn from external point (here, E) to a circle, then, product of measure of one secant's external part and total secant is equal to other secants external part and whole secant.

In algebra, that is:

(x+1)(x+1+11)=(x+4)(x+4+1)

Let's multiply and find the value of x:

(x+1)(x+1+11)=(x+4)(x+4+1)\\(x+1)(x+12)=(x+4)(x+5)\\x^2 + 13x + 12=x^2+9x+20\\13x+12=9x+20\\13x - 9x = 20 - 12\\4x = 8\\x = 2

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8 0
3 years ago
15. please 10 points if you help me with this question
anzhelika [568]

No it does not stay the same

Original ratio is 6:5 which means it will only stay the same if the amount of movies to band is taken at multiples of this ratio. per sample if 24 movies are sold then

24/6=4 so you will have to multiply or sell 5*4=20 of the band ones to be able to keep same ratio.

4 0
2 years ago
Evaluate 3^-2, please help
Marrrta [24]

Answer:

b−n=1bn.

Exact form: 1/9

Decimal form: 0.1

Have a good day! :)

8 0
3 years ago
if leslie moves her money into an account that pays 8 percent compounded annually for 5 year(s), the amount of money that will a
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The value of an account at 8% compounded annually,
after 5 years have passed since your initial deposit, is

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Whatever the amount is, it will become  46.9% greater  in 5 years !

3 0
3 years ago
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