Answer:
x=-1
Step-by-step explanation:
Step 1: Factor left side of equation.
(x+1)(x+1)=0
Step 2: Set factors equal to 0.
x+1=0 or x+1=0
x=−1
Answer:
25m/s
Step-by-step explanation:
distance = 30km = 30× 1000m
time = 20 min = 20 × 60 = 1200sec
we know,
speed = distance/time taken
= 30000/1200
= 25m/s
Well the answer would have to be 440