Answer:
1 and -4
Step-by-step explanation:
cause when you factor the equation its (x-1)(x+4)
Step-by-step explanation:
The answer is option b.
Explanation in the pic.
Need any other maths, feel free!!
Answer:
What
Step-by-step explanation:
do i have to answer a question
Hello again lol. I would think it would be two rooms don’t count me on this one but I think it is two
Answer:
The speed of the boat is 20 km/hr
Step-by-step explanation:
Let s be the speed of boat in still water
Let d be the distance
Upstream speed = s-4
Jane took 30 min to drive her boat upstream to water-ski at her favorite spot.
So, Distance traveled in upstream =
Downstream speed = s+4
So, Distance traveled in downstream = 
So, 
30s-120=20s+80
10s=200
s=20
Hence The speed of the boat is 20 km/hr