Answer:
0.07 or 7%
Step-by-step explanation:
I = Prt
630 = (1000)(9)r
630 = 9000r
r = 0.07
Answer:
Option B. is correct
Step-by-step explanation:
Let
denotes time taken by Mia alone to clean the room and
denotes time taken by Holly alone to clean the room.
As Mia and Holly can clean their room in 20 min, working together,
Also,
Mia, working alone, can do the job in 30 min.
So,

Put (ii) in (i)

Therefore,
Holly can clean the room alone in 60 minutes.
Option B. is correct
Answer:
150(0.4),2,500(0.11)
Step-by-step explanation:The first question says 150 participants and 40%of the participants are eliminated. so it's 150(0.4)n
same goes for the second 2,500 bacteria in a colony the colony grows at a rate of 11% every hour so the answer to the question is 2,500(0.11)n
Answer:
1
Step-by-step explanation:
the answer is 1
Rewrite in slope-intercept form, y = mx + b, so that you can compare the slopes.
y = 4x + 6 m = 4
- 15x + 3y = - 45
add 15x to each side
3y = 15x - 45
divide both sides by 3
y = 5x - 15 m = 5
No, the slopes are different.