Triangle??

[KristiK]

A cable running from point A to point B is 9 miles. From point B to C is 15 miles. Find distance from A to C and if cable is $1100 - how much will it cost? (Think of V shape with ABC's being at the points)

 

[tkhunny]

A cable running from point A to point B is 9 miles. From point B to C is 15 miles. Find distance from A to C and if cable is $1100 - how much will it cost? (Think of V shape with ABC's being at the points)

It appears to me that it will cost $1100. Isn't that what you told us?

Do you mean $1100/mile?

I have a REALLY STRONG suggestion. Back up a chapter or two and review the information on UNITS. You don't seem to have the idea.

Note: 9 miles + 15 miles = 24 miles. It doesn't matter if you bend it along the way.

 

[stapel]

Without knowing the orientation of A, B, and C relative to each other, I don't see how the direct distance between A and C can be figured -- unless we assume that A, B, and C are collinear, and your subject line would seem to contradict that. Sorry.

Eliz.

P.S. Please reply with clarification of the "cost" of the cable. Is this a total cost? If so, then your question is already answered. Or is this a unit cost? If so, then you need to provide the unit.

 

[KristiK]

Triangle??? AGain

It is $1100 per mile. Is this just a Pythagorean problem?

 

[stapel]

Re: Triangle??? AGain

Is this just a Pythagorean problem?

Only if you forgot to mention that A, B, and C form a right triangle. And even then, we'd need to know which of the three sides was the hypotenuse.

Until you tell us the relative orientation of the three points, there is no way to answer the question.

Eliz.

 

[KristiK]

15 is the hypotenuse

 

[stapel]

Assuming then that A, B, and C form a right triangle, use the Pythagorean Theorem to find the length of the other leg, AB. Then, assuming that the units on these lengths were given as being in "miles", multiply this length by the per-mile cost.

(It would be very helpful if you included all the necessary information when you post a question. We can't always guess what else we need to ask you for.)

Eliz.

 

[KristiK]

Suppose it's NOT a right triangle? On the exam - it's presented as 3 islands inthe shape of a slightly wider version of the letter V. Island "A" is top left, Island "B" is bottom point and "C" is top right. Gives miles from A to B, which is 9 miles - B to C is 15 miles and A to C is blank. It asks to find the distance in miles from A to C. Assuming that running a cable from A to C is $1,100 per mile then how much is it going to cost?

 

[stapel]

If the triangle isn't right, and if they provide no information as to what sort of triangle it actually is, then I see no way to answer the question, since we have no way of finding the length of segment AC. Sorry.

Eliz.