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baherus [9]
3 years ago
11

(23 + ) + 19 = 23 + ( + 19)

Mathematics
1 answer:
Tpy6a [65]3 years ago
6 0
I think it should be 42
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An equailateral triangle is also an
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4. solve<br> e) 4^x-10.2^x+16=0<br> I think the dot means multiply?
suter [353]
4^x-10\cdot2^x+16=0\Rightarrow(2^2)^x-10\cdot2^x+16=0\Rightarrow(2^x)^2-10\cdot2^x+16=0

subtitute\ 2^x=t > 0\\\\t^2-10t+16=0\\t^2-2t-8t+16=0\\t(t-2)-8(t-2)=0\\(t-2)(t-8)=0\iff t-2=0\ or\ t-8=0\\\\t=2\ or\ t=8\\\\t=2^1\ or\ t=2^3\\\\therefore\ 2^x=2^1\ or\ 2^x=2^3\\\\Answer:\boxed{x=1\ or\ x=3}
6 0
3 years ago
Read 2 more answers
What is this, x-8 all over 3=3
inysia [295]
You mean (x-8)/3 = 3 ...right?

You would multiply both sides by 3.
Then, add 8 to both sides.

x=17
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3 years ago
Help me with this please ​
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A

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Brainliest PLEASE

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