AdamTaurus

How about this one?

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

That is all a matter of opinion though, Manuel. Not saying that you are trying to do this, but don't force you're religion onto others. My parents tried it on me and it didn't work out. I don't even believe in the possibility of a god.

-10=(-10*-3)+(-10*-2x)

-10=30+20x

Subtract 30 from both sides.

-40=20x

Divide both sides by 20.

x=-2

Hey, I'm not saying I have all the answers. There are compelling arguements for both sides, science and God. But just because something seems unlikely does not mean you should completely discount the possibility. (Interpret that how you choose, as an arguement for God or for science).

Ok.

So, I'm going to denote the unknown number as x.

x*-7=13

Just divide both sides by -7.

\(x=-\frac{13}{7}\approx-1.857142\)

Are you asking for what multipled by -7 gives 13?

It really depends on whether or not you believe in a god to determine whether he is real. I myself do not believe in a god, therefore I cannot answer this question in an unbiased way. A Christian however, they would try to present facts about God's existence being true, but there is honestly no way to know until you die.

What are you asking? \(-7\neq13\)

2*3=6

So, I going to denote head to h, body to b, and tail to t.

The tail is equal to the head (9 inches) plus half the body.

\(t=9+\frac{1}{2}b\)

The body is the size of the head plus the tail.

\(b=9+t\)

Now, plug the first equation into the second for t.

\(b=9+(9+\frac{1}{2}b)\)

Simplify.

\(b=18+{1\over2}b\)

Multiply everything by 2 to get rid of fractions.

\(2b=36+b\)

Subtract b from both sides.

\(b=36\)

So, the body is 36 inches long

Now, plug 36 into the first equation.

\(t=9+{36\over2}\)

Simplify.

\(t=9+18\)

\(t=27\)

So, the head is 9 inches long, the body is 36 inches long, and the tail is 27 inches long.

For the full length it is h+b+t, or \(9+36+27\).

\(9+36+27=72\)

So your fish is 72 inches long (now that's a catch!)