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Whenever somebody posts an "answer" but doesn't show how that answer was derived, 

it's probably a troll telling a lie to mess you up.  Please don't take such postings seriously. 

People who legitimately want to help you will show how they got their answer. 

Five times a number is divided by 7 more than the original number. If the result is 12, then what was the original number?  

5x / (x + 7)  =  12  

5x  =  12 • (x + 7)  

5x  =  12x + 84  

–7x  =  84  

x  =  –12  

Check answer:   (5)(–12) / (–12 + 7)  =  12  

                                            –60 / –5  =  12  

                                             looks good  

_.

4 shows the remainder, because 100/8 is 12 remainder 4. However if you want a decimal answer, you have to keep going in the division. So you're gonna bring down another zero after the decimal point in the 100. (100 is the same as 100.0)

40 goes into 8 five times, so the five goes after the decimal point in the quotient. So that's why 100/8 is 12.5.

I hope this helped!

Hint:

If a triangle has sides 10 and 10 with the angle between them x degrees

The area of area of the triangle will be  1/2 * 10 * 10 * sin(x)

Draw the rhomubus, that will help you see the relevance.

The probability is 4/5.

The original number is -3/7.

-7ab^2 + 9a^3b = ab(-7ab + 27)

The answer is x = 4.

A + B + C = -6

The coefficient of x^3 is -6.

There are five solutions.

[AXY] = 32.

The answer is 1444.

That is EXCELLENT Elijah !!

Not lucky, mostly consistent consciencious effort  

You do not need help with all of this.

Please discuss what you CAN do when you put your question up.

I await your response.

12th

Well.. that is kinda sad .

so lucky, congrats. if you dont mind, what grade r u in?

The answer is 18.6%

angle BAC = 128 degrees.