Answer:
55
Step-by-step explanation:
add 25 and 30 to get 55
a triangle always equals 180 so
180-55=125
y is a straight line with x which equals 180 so
180-125=55
Let the height of the tree be x.
Ratio of length of shadow to height: 15/60 = 40/x
x = (60 x 40)/15 = 160 in.
Apply the distributive property:
12(4-v)
(12*4)-(v*12)
48-12v
Take the x-axis and y-axis and locate the point on the graph. if it is exactly on the line it is a solution. Alternatively you could take the equation in the form of y=mx+b or ay+bx=c and replace the variables with the actual numbers and see if the equation makes sense