3x+5y=42
9x+7y=78
adding above equation
12x+12y=120
x+y=10
175 - 97.5 = 77.5
77.5 / 97.5 = 0.7948 = 79.5%
answer
<span>79.5%</span>
2sin3x-1=0
sin3x=1/2
sinx=1/2, x=pi/6, 5pi/6
3x=arcsin(1/2)
x=1/3*pi/6
[x=pi/18]
True they are equal
Step-by-step explanation:
123/77=
123×8/77×8
=984/616
C. Pi•r^2. Area of a circle
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