The figure shows a gas tank in the form of a rectangular prism that is 40% full. How many more gallons of gas will it take to fi
ll the tank? (1 gallon = 231 in.3)
1 answer:
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Let the width be 
.
Therefore we know that the length
.
We know that area is
.
Therefore:
Now we can solve for the width.
We can use the quadratic formula from here where a = 2, b = -5 and c = 273.
Solving this gives us the possible answers of 13 and
. Since our width can't be negative, we know the answer is 13.
Next, we can plug 13 into the formula for area to find the length.
We now know the width and length. Finally, the last thing to do is calculate the perimeter using the formula
So, the perimeter of the rectangle is 68 yards.
Therefore we know that the length
We know that area is
Therefore:
Now we can solve for the width.
We can use the quadratic formula from here where a = 2, b = -5 and c = 273.
Solving this gives us the possible answers of 13 and
Next, we can plug 13 into the formula for area to find the length.
We now know the width and length. Finally, the last thing to do is calculate the perimeter using the formula
So, the perimeter of the rectangle is 68 yards.
Answer:
A. 2.3 sec and 5 sec
Step-by-step explanation:
We are given that start from 110 feet away, a person on a bicycle rides towards a checkpoint and then it passes it. the rider is traveling at a constant rate of 30 feet per second.
The distance between the bicycle and the checkpoint is given by the equation :
Now we are required to calculate at what times is the bike 40 feet away from the checkpoint. So, substitute d = 40 in the equation
and
and
and
and
and
Hence at 2.3 sec and 5 sec the bike is 40 feet away from the checkpoint.