Answer:
7y=x
Step-by-step explanation:
In a parallelogram, the diagonals bisect each other.
That being the case,
6x = 72
x = 12
AND
x-5 = y
72 -5 = 67
y=67
x = 72
and the diagonals measure
144 and 134
first term = initial number
second term = initial number + common difference
third term = initial number + 2(common difference)
So...
2x+5-(x+4) = common difference
4x+3-(2x+5) = also common difference
2x+5-(x+4) = x+1
4x+3-(2x+5) = 2x-2
Because x+1=2x-2 we can solve for x.
x=3
So the sequence goes... 7,11,15...
19 is the fourth term
34/2= -t => 17= -t => t= -17
Average rate of speed in miles per hour
= 15 3/4 ÷ 2 1/4
= 63/4 ÷ 9/4
= 63/4 × 4/9
= 63/9
= 7
Answer
7 mph
