It is okay to take the inverse of both side given that you remember to exclude the value that make the denominator zero which is in this case r=-1
It's looking for the measures
m<F + m<G = 180°
(4x)° + (8x)° = 180°
12x = 180°
÷12 ÷12
x = 15
check your work
m<F + m<G = 180°
(4x)° + (8x)° = 180°
4(15)° + 8(15)° = 180°
60° + 120° = 180°
Write and solve an equation of ratios:
oil 8 x
---- = ---- = -----------
vin 5 7 liters
Then 5x = 56, and x = 56/5 liters (of vinegar)
A=2(wh+lw+lh)
l=8m
w=3m
h=2m
A=2((3m)(2m)+(8m)(3m)+(8m)(2m))
A=2((6m)+(24m)+(16m))
A=2(46m)
A=92m
Area is 92m
Should be 21 boys because 7+7+7 equal 21 and 3+3+3 equal 9 which equals 30