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324 Different Possibilities

1 1/4  = 1.25

150cm/1.25=120 pieces

Oh, thanks!

e^ln(x) = x       "ln" means log to the base e

Why not just divide every term by 5?  The answer is immediate:  x-2 = 5

I don't understand, either, Anonymous!!

What do you mean?

It depends on the situation. X always represents a number. What's your equation?

In order to answer the question, you have to first find the value of x in the first equation. Once you find x, you plug that value into the second equation. When finding the value of x, you have to do the opposite of the current operation applied to the number/variable (in this case just number) to get x by itself. If you do the operation to one side of the equation, you have to do it to the other as well. The opposite of addition is subtraction which means that the opposite of subtraction is addition, and the opposite of multiplication is division which means that the opposite of division is multiplication. For this equation:

5x-10=25

The opposite of subtraction is addition, remember? We need to add 10 to both sides of the equation to keep it balanced.

5x-10+10=25+10

Solve

5x=35

The opposite of multiplication is division, so we need to divide both sides by 5.

5x÷5=35÷5

Solve

x=7

Since x=7, substitute it back into the original equation.

x-2 becomes 7-2.

7-2=5

 Questions?

Let x - 2  = the answer

then x = the answer + 2

Therefore

5(the answer + 2) - 10 = 25    Add 10 to both sides

5(answer + 2) = 35                Distribute 5 over the terms in the parentheses on the left side

5*answer + 10 = 35                 Subtract 10 from both sides

5*answer = 25                          Divide by 5 on both sides

answer = 5

And that's the "answer' for x - 2

Remember...an equation has to satisfy all values where it is defined...in this case where x > 0. So lets pick any positive number, say, 1, and see if it "works.'

7 /(1)^3 = (3/2 x √(1) + 2 / (1)^3)   ???

7/1 = (3/2 + 2)  ???

7 = 7/2   ???

Nope......doesn't look like it's true !!

(Actually.....your equation only works when x ≈ 1.41)

3,5,7,2,100,and 50     to make 953

50 x (7 + 2)  + 100(5) + 3

(50 x (9)) + 500 + 3

450 + 500 + 3

950 + 3

953

2,5,5,6,8,10 and the magic number is 97

(8 x 10) + 2(5 + 6) - 5

80 + 2(11) - 5

(80 + 22) - 5

102 - 5

97

Also

10 x (2 x 5) - (5 + 6) + 8

(10 x 10) - (11) + 8

100 -11 + 8

89 + 8

97

Yes

That is too much thinking for me Phill lol

It means that x is squared aka it is * by itself like 2 to the second power is 2*2 but math people like to shorten things instead of going 2^10( tenth power) 2*2*2*2*2*2*2*2*2*2

OK.....combining like terms....we have

11x^2 -5x + 5

And that's it !!

Harder one: just confess because if you confess you will have 1/2 the time he has if he doesnt confess( you=10, him=20). And if he confesses then you both get 10 years therefore you will have your partner out as the same time as you 

Good job, Winnie!!!

Harder one : 8*10 +5+5+6+2=97