Answer:
C. (-7, -15)
Step-by-step explanation:
Both the x- and the y-coordinates of a point in the third quadrant are negative. The given point C. (-7, -15) is the only one of the four choices that satisfies this criterion.
one fifth of the boys in the classroom have brown hair.
Answer:
Step-by-step explanation:
We have the system of equations:
Let's solve by substituting. We know that 
, so we can substitute 
in as 
in the equation 
.
Simplify this down so that we have 
on one side of the equation:
Now that we know the value of , we can substitute it in to the equation 
to find .
Hope this helped!
Step-by-step explanation:
secants originating from the same point have the same relative length relationship :
outside part × sum of outside and inside parts
is the same for every secant from the same point.
so,
5×(7+5) = 6×(2x-8+6) = 12x - 12
60 = 12x - 12
12x = 72
x = 6
WV = 2x - 8 = 2×6 - 8 = 12 - 8 = 4
so, B is correct.
