Α-(α-90°)=(α-180°)-α Pls help!

1 answer:

6 0

90=(a-180)-a 90=-180 That result is not possible so the answer should be undefined. If I am wrong and there is a solution, you can find it by Google searching a graphing calculator and then put the two equations y=x-(x-90) and y=(x-180)-x into the calculator. The x value for where the two equations intersect is the a value you are looking for. If the graphs never intersect, there is no solution like what my work shows. I hope this helps.

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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

Work out whats 2f-4g

choli [55]

Step-by-step explanation:

I hope this helps. good luck