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Len [333]
3 years ago
9

R' (-1, 9) is the image of R after a reflection in the x-axis. What are the coordinates of R?

Mathematics
1 answer:
Yanka [14]3 years ago
8 0
(1,9) HERE COMES THE SUN DUDUDU HERE COMES THE SUN
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Solve by taking the square root of both sides. 3(x+4)^2-24=0
VARVARA [1.3K]
<span>3(x+4)^2-24=0
</span>
<span>3(x+4)^2 = 24
</span>
<span>(x+4)^2 =  24/3
</span>
<span>(x+4)^2 = 8
</span><span>
</span><span>(x+4)² = (2√2)² ⇒ x+4 = 2√2 ⇒ x = 2√2 - 4
</span>


6 0
3 years ago
Read 2 more answers
Find x<br><br><br><br><br> Thanks for the help in advance!
Marina86 [1]

I'm not sure if this is the easiest way of doing this, but it surely work.

Let the base of the triangle be AB, and let CH be the height. Just for reference, we have

AH=2,\quad HB=6,\quad AC=x

Moreover, let CH=y and BC=z

Now, AHC, CHB and ABC are all right triangles. If we write the pythagorean theorem for each of them, we have the following system

\begin{cases}4+y^2=x^2\\36+y^2=z^2\\x^2+z^2=64\end{cases}

If we solve the first two equations for y squared, we have

y^2=x^2-4\\y^2=z^2-36

And we can deduce

z^2 = x^2+32

So that the third equation becomes

x^2+x^2+32=64 \iff 2x^2 = 32 \iff x^2=16 \iff x=4

(we can't accept the negative root because negative lengths make no sense)

7 0
3 years ago
Simplify the product using a table.
bearhunter [10]
The answer is b

i think , im not sure
6 0
3 years ago
Which angle is congruent to CBA?<br> BCD<br> CDA<br> ABC<br> BAD
Angelina_Jolie [31]

Answer:

the second cda is right give brainliest pls

Step-by-step explanation:

7 0
3 years ago
What is 11 rounded off to the nearest hundred
fenix001 [56]
The answer is 0 because it isn't above 49 and therefore can't be rounded to 100.

Hope this helps :)
3 0
3 years ago
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