Estimate
(x,y)
x=left right
y=up down
solution=intersection
looks like about 6.5 left or x=-6.5 and y=3.5 down or y=-3.5
(-6.5,-3.5) would be a good estimate
(if you did calculate it it would be (-32/5,-18/5) or about (-6.4,-3.6))
answer is first option
<span>The correct answer is option B. i.e. Transitive property. According to the transitive property of equality, if 8=x and x= y then, y = 8. This is mainly used in algebra and this property is a part of equalities and inequalities.</span>
Assuming that only one choice of music can be made then the question is simple.
20 + 40 = 60 students
