Answer:
It would take 15 students 6 days to weed the school compound
Step-by-step explanation:
This first step to solving this question is to break down the given rates.
We are told that 10 students take 9 days to weed the school compound. From here we can simplify this by figuring out how long it would take 1 student to weed the compound. Having less people would mean taking a longer time.
1 person is a 1/10 of 10 people. Since we have 10x less people, it should take 10x as long. Therefore it would take 1 person 9x10=90 days to weed a school.
Now the question asks how long it would take 15 people. 15 people is 15x as many as 1 person, so it should take 15x less time to weed the compound. 90/15 = 6
It would take 15 students 6 days to weed the school compound.
Similarly you could have just divided 9 by 1.5 as 15 is 1.5x10, but it is easier to explain the process using the above method.
Hope this helped!
Answer:
5
Step-by-step explanation:
slope = (8-0)/(4-(-2))
= 8/6
= 4/3
y = 4/3 x + c
0 = -8/3 + c
c = 8/3
y = 4/3x + 8/3
To find the distance, we have to find a line perpendicular to the above line, which also passes through P(5,1).
This can be done by making it such that both slopes give a product of -1.
y = -3/4x + c
Substituting (5,1):
1 = -15/4 + c
c = 19/4
y = -3/4x + 19/4
Now, to find the point where both these lines intersect, we use simultaneous linear equations:
-3/4x + 19/4 = 4/3x + 8/3
4/3x + 3/4x = 8/3 - 19/4
25/12x = -25/12
x = 1
Substituting x into 'y = -3/4x + 19/4':
-3/4 + 19/4 = 4
(1,4) is the point closest to P(5,1)
Finding the distance using the distnace formula:
Hence, the distance is 5.
<em>Feel free to mark this as brainliest! :D</em>
Answer:
6,428
Step-by-step explanation:
solo usa una calculadora o una hoja de papel
Espero que esto te ayude y que tengas un gran dia.
The answer is seven, 7+7=14+6+20