Frank can mow lawns at a constant rate of 6/5 lawns per hour. what is the ratio of lawns to hours?
1 answer:
Answer:
6 : 5
Step-by-step explanation:
Rate =
But Rate is also equal to number of lawns mowed in a certain amount of time.
Since ratio should always be in terms of simple whole numbers.
If 6/5 lawns are mowed in 1 hour, then,
6 lawns will be mowed in:
=
= 5 hours.
therefore, 6 laws will be mowed in 5 hours.
Ratio of lawns to hours in 6:5
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Answer:
Step-by-step explanation:
we know that
The equation of a exponential decay function is given by
where
y is the value of the investment
x is the number of years
a is the initial value
r is the rate of change
we have
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Find the amount Amy has at the end of 8 years
For x=8 years
substitute the value of x
Answer:
The probability that the buttons for 3 consecutive floors are pressed is or 0.0833
Step-by-step explanation:
Consider the provided information.
They are equally likely to want to go to floors 2 through 10.
That means the number of buttons are 9.
Each presses the button for their desired floor (unless one of the others has already pressed that button).
It means that if two people wants to go at the same floors, then only one person will press the button.
Therefore, the total number of ways are: 9×8×7=504
Three consecutive floors means they have been picked:
2,3,4 or 3,4,5 or 4,5,6 or 5,6,7 or 6,7,8 or 7,8,9 or 8,9,10
We have 3 persons that means we can arrange them in 3! ways.
Therefore, the total number of favorable outcomes for this case is 7×3!=42
Hence, the probability that the buttons for 3 consecutive floors are pressed is or 0.0833