There are 180 degrees total in a triangle and the tell you one angle is 90. So you solve the equation 4x+6x=90. So x=9
I got .00390625 for the answer
The First expression is 13 to the 1st power. the second expression is 13 to the -22nd power. third expression is 13 to the 15th power fourth expression is 13 to the 7th power.
To find 10% of 82, you do 82*.1 so 8.2 is taken off the total.
So if we do 82-8.2 you get 73.8 as the sale price
Hope this helps
