A is the answer because it does not repeat any of the x numbers
Perimeter = 2(l + w)
Thus,
102 = 2(l + w)
l = 6 + 2w
102 = 2( 6 + 2w + w)
102 = 12 + 4w +2 w
102 = 12 + 6w
90 = 6w
Thus, w = 15.
Length = 6 + 2w
= 6 + 30
= 36.
Thus, the length is 36 meters and width is 15 meters.
Mark and Robyn used based-ten blocks to show that 200 is 100 times as much as 2.
Marks model shows 20 instead of 2. His model shows 200 is 10 times as much as 20. It does not make any sense.
Robyn model shows 2. His model shows 200 is 100 times as much as 2.
because 100 times 2 = 1=200
So Robyn model makes more sense.
120/2 = x/5....120 miles to 2 hrs = x miles to 5 hrs
cross multiply
(2)(x) = (120)(5)
2x = 600
x = 600/2
x = 300....the motorcyclist would travel 300 miles in 5 hrs
or u could do it this way..
120/2 = 60 miles per hr
60 * 5 = 300 miles