$$10x^{2} = 490$$

Please show me step by step how to solve, so i can understand how you got the answer.

Question

$$10x^{2} = 490$$

Please show me step by step how to solve, so i can understand how you got the answer.

jim_thompson5910 · Answer

divide both sides by 10 to get

x^2 = 49

jim_thompson5910 · Answer

I'm sure you can see the answer from here

mathteacher1729 · Answer

Dividing a number that ends in zero by 10 is easy, just drop the last zero. So 490 divided by 10 is 49. 

Now we have "x squared = 49"

So list your perfect squares...

1 squared = 1
2 squared = 4
3 squared = 9 
4 squared = 16 
etc... 
You'll soon get to 49. 

But remember that (-3)*(-3) also equals nine... 

so you have TWO answers (one positive and one negative).

anonymous · Answer

ty mathteacher1729

mathteacher1729 · Answer

You're welcome. :)