Help with another Math problem

[JRios1968]

[PugetSoundSoldier]

"4" is right after "3" and just before "5"...

Which thou shalt not count to when using the Holy Hand Grenade of Antioch...

[mikrofon]

It took me 50 seconds, which is 5 more than 3 times the time it took you — plus five — and coincidentally adds up to 65.....

[Mikey_1962]

Two equations and two unknowns.

Classic 9th grader.

x+y=65

3x+5=y

x = 15
y = 50

[blowfish]

> Where do you get the "4"?

A + (3 x A) = 4 x A

[IronJack]

The smaller number is 15. But more importantly, why is the person being tested not the one doing the work?

The sum of two numbers (x and y) is 65. X + Y equals 65.
The larger number (X) divided by the smaller number (Y) is 3 with a remainder of 5. So X/Y equals 3 with a remainder of 5. Or X equals 3Y + 5. Substituting (3Y + 5) in place of X in the first equation gives 3Y + Y + 5 equals 65. If you can’t solve it from there, you shouldn’t be taking 9th grade algebra.

[bobby.223]

outstanding!!!

[dozer7]

50 and 15.

I agree for the set of real numbers, but you have not considered the set of fantasy liberal numbers (not to be confused with the set of imaginary i/j numbers, although they exist in the left hand plane) - we will skip polar notation for clarity. There exists in that set the major and minor values of 50 and 15. For example 2+2=4 except for large values of 2. So there exists multiple solutions. This was the substance of my masters degree. The Venn diagram I presented is now being considered by the louve as a break through piece of abstract art. I hope this helps.

best regards

[andy58-in-nh]

By now, you have learned that the liberal solution to any problem is whatever makes you feel deeply fulfilled, validated as a unique person, and unmolested by the necessity of obeying narrow-minded and restrictive Western cultural norms or such outmoded concepts as "right or wrong" and "true or false".

[brityank]

Been there; done that; got the diploma!

[Pan_Yan]

I'm hoping we are leaning towards becoming an author, not a physicist?

[Elle Bee]

http://www.wolframalpha.com/

.

[MosesKnows]

One can also do this calculation in the head but most will not realize it until they do the math.

What is the length of rope needed to encircle the earth at its largest diameter assuming the earth is a perfectly flat sphere?

After you have an answer you feel confident with calculate how much additional rope is required to raise the rope exactly one foot off the earth’s entire surface?

[justlurking]

What is the length of rope needed to encircle the earth at its largest diameter assuming the earth is a perfectly flat sphere?

It depends on whether you are raising the rope a foot above the surface at a single point, or the entire rope.

For the former, it's exactly 2 feet (1 up and 1 down).

For the latter, you are simply increasing the diameter by 2 feet, so the circumference will increase by 2 * Pi, or about 6 feet, 3 inches.

This is the correct answer for a sphere or circle of any size.

[MosesKnows]

It depends on whether you are raising the rope a foot above the surface at a single point

...how much additional rope is required to raise the rope exactly one foot off the earth’s entire surface?