3 years ago

Need help due tmr!!!!!!

Mathematics

2 answers:

Evgen [1.6K]3 years ago

8 0

Answer:

108

Step-by-step explanation:

amid [387]3 years ago

7 0

Answer:

I help u after my online class

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Solve the equation. 9.54 = p - 4.2 O 5.34 0-13.74 O 13.74 0 -5.34

Gekata [30.6K]

Answer:

Option C

Step-by-step explanation:

9.54 = p - 4.2

9.54 + 4.2 = p

13.74 = p

5 0

3 years ago

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Why can't you factor 2cosx^2+sinx-1=0 ?

Masja [62]

$2cos^2x+sinx-1=0\\\\2(1-sin^2x)+sinx-1=0\\\\2-2sin^2x+sinx-1=0\\\\-2sin^2x+sinx+1=0\\\\-2sin^2x+2sinx-sinx+1=0\\\\-2sinx(sinx-1)-1(sinx-1)=0\\\\(sinx-1)(-2sinx-1)=0\iff sinx-1=0\ or\ -2sinx-1=0\\\\sinx=1\ or\ -2sinx=1\\\\sinx=1\ or\ sinx=-\frac{1}{2}\\\\x=\frac{\pi}{2}+2k\pi\ or\ x=-\frac{\pi}{6}+2k\pi\ or\ x=\frac{7\pi}{6}+2k\pi\ where\ k\in\mathbb{Z}$