A railroad crew can lay 5 miles of track each day. They need to lay 140 miles of track. The length, L (in miles), that is left t
o lay after d days is given by the
following function.
L(d) = 140-50
Answer the following
(a) How many days will it take the crew to lay all the track?
I days
(b) How many miles of track does the crew have left to lay after 18 days?
miles
following function.
L(d) = 140-50
Answer the following
(a) How many days will it take the crew to lay all the track?
I days
(b) How many miles of track does the crew have left to lay after 18 days?
miles
1 answer:
You might be interested in
Triangle ABC is a right triangle, meaning we can use the Pythagorean Theorem to find x.
The formula for the Pythagorean Theorem is:
where a is the hypotenuse, and b and c are the legs.
In this problem, we have the vertical leg as 16, the horizontal leg as x, and the hypotenuse as 20. Therefore, we can say that
Therefore, we can plug into the formula to find x:
We first change the variable c to x and square both sides of the equation. Then we subtract b^2 from both sides.
We square root each side to find the variable answer for x. Then we plug in the numbers:
We find that x = 12. The answer is A. 12.
The formula for the Pythagorean Theorem is:
where a is the hypotenuse, and b and c are the legs.
In this problem, we have the vertical leg as 16, the horizontal leg as x, and the hypotenuse as 20. Therefore, we can say that
Therefore, we can plug into the formula to find x:
We first change the variable c to x and square both sides of the equation. Then we subtract b^2 from both sides.
We square root each side to find the variable answer for x. Then we plug in the numbers:
We find that x = 12. The answer is A. 12.