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slamgirl [31]
3 years ago
8

Three students can wash a car in 16 minutes. If the time varies inversely with the number of students washing the car, how many

minutes will it take two students to complete the job?
a. 20b22c.24d. 32/3
Mathematics
1 answer:
gogolik [260]3 years ago
6 0
Let
x----------> the number of students
y---------> the time in minutes

we know that
<span>If the time varies inversely with the number of students
</span>so
y=k/x
for x=3
y=16 min
16=k/3---------> k=48

y=48/x
for x=2
y=48/2-------> y=24 minutes

the answer is
24 minutes
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3 years ago
A fireman's water hose shoots 320 kg of water each second against the door of a building. The velocity of the water is 20 m/s an
NeX [460]

Answer:

6400\ \text{N}

Step-by-step explanation:

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3 0
3 years ago
On an indoor circular track of circumference 50 feet, Joneal starts at point $S$, runs in a counterclockwise direction, and then
Archy [21]

Answer:

He stoped on 3th quarter,i.e, $C$.

Step-by-step explanation:

He ran 105 full circles ( 5280/50=105 ( rst= 30ft) ). So in the last circles he started from point S to run 30ft more.

The quarter of the circle is long 50ft/4= 12,5ft. So for 30 feets he must run 2 quarters, its 25ft. The last 5ft he ran on the 3th quarter, so he stoped on C.

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4 0
3 years ago
If the least value of n is 4, which inequality best shows all the possible values of n?
Sladkaya [172]
Comment
If the least value of n is 4 that means that 4 is one of the numbers in whatever it is that you are describing. In other words n = 4 is part of your answer. If that is the case, the last two values are incorrect because 4 is not included in either one of them.

Discussion
So that means that you have to choose between one of the first 2. The key word is least. It means that the lowest possible value is 4. Nothing is lower. 

When you write something like n ≤ 4 what you are saying is the n must be = to or less than 4. The arrow head points to the smallest number which, in this case, is n. 

But the question says that the least number is 4. So the arrowhead must point towards the 4. This we have that n must be larger than 4. 

Conditions
There are 2 conditions to this problem
n must be greater than 4
n can equal 4. It is the smallest number.

Answer
n≥4 <<<<<answer
B <<<<<< answer.
7 0
3 years ago
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