Answer:
0.3
or

Step-by-step explanation:
Speed=distance/time
average speed=(total distance)/(total time)
total distance=203+243=446
total time=3.5+4.5=8
average speed=(446)/(8)=55.75
answer is A
Answer:
<em>- 7n ≤ 77</em>
Step-by-step explanation:
<em>- 7n ≤ 77</em>
n ≥ - 11
Answer:
86,400
Step-by-step explanation:
Answer:
let dimention of original garden be x
then (x-8)(x-5) = 180
x^2 -13x -140 = 0
(x-20)(x+7)=0
x= 20 or x = -7
x = 20
original area = (20)^2
= 400 m^2