2x+57+61=180
2x+118=180
2x=62
X=31
Answer:

Step-by-step explanation:
can be represented as
and
can be represented as
. Therefore, the expression can be rewritten as:

The rule for multiplying two exponents with the same base is you add the exponents. For example: 
We can use the same property to get:

which is just
after you add the fractions
Step-by-step explanation:
here's the solution: -
if the given triangles are similar, then their corresponding sides will be in proportion, so
=》

( by cross multiplication )
=》

=》

=》

=》

=》

51 as a decimal is .51 and 100 as a decimal is 1.00
51100 as a decimal is 511
$30.50-$17.79 is $12.71. I hope that helps you :)