Expand (x+2)^2: x^2 + 4x + 4 : remember that (a+b)^2 = a^2 + 2ab + b^2
So: x^2 + 4x + 4 - x^2 = 60
Just divide -30 m/s (the change in velocity) by 12 seconds (the time required for the car to come to a stop):
-30 m/s
----------- = - 2,5 m / (sec)^2 (answer)
12 sec
x= r - h/y subtract r from both sides
x-r = -h/y multiply each side by -y
-y(x-r) = h
-xy +yr = h
3/18 = 0.166667
hope this helps .
Answer:
no guaranteed classification
Step-by-step explanation:
Both a rectangle and a parallelogram have two pairs of congruent sides. Because we don't know anything about the angles between these sides, it is not possible to establish which kind of figure is.
