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Alla [95]
3 years ago
15

Help plz. I've been stuck for 1 hour.

Mathematics
1 answer:
sergiy2304 [10]3 years ago
4 0
It would be y=x-4 because y is 4 take away x. For example, x is 0 and y is -4, therefore -4 has been taken away.

Hope this makes sense and I hope I’ve helped.

Have a great day :)
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Answer:

Hello,

Step-by-step explanation:

we must first remember that:

\boxed{sin(5x)=5sin(x)-20*sin^3(x)+16*sin^5(x)}\\\\

Let say t=sin(x)

sin(x)+cos(x)=1.4\\\\t+\sqrt{1-t^2}=1.4\\\sqrt{1-t^2}=1.4-t\ we\ square\\1-t^2=1.4^2+t^2-2.8*t\\2t^2-2.8*t+0.96=0\\\Delta=2.8^2-4*2*0.96=0.16=0.4^2\\\\t=\dfrac{2.8-0.4}{4} =0.6\ or\ t=\dfrac{2.8+0.4}{4}=0.8\\\\t^3=0,216\ or\ t^3=0,512\\\\t^5=0,07776\ or\ t^5=0,32768\\\\\boxed{sin(5x)=5*0.6-20*0.216+16*0.07776=-0,07584}\\\\or\\\\\boxed{sin(5x)=5*0.8-20*0.512+16*0.32768=-0,99712}

8 0
3 years ago
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