It’s 30 because they are vertical angles which means both sides are congruent
A. the coordinates for the 3rd one is (7, -4)
4n + 8 = n - 7
(In which 'n' represents the unknown number)
(4n + 8): "Eight more than the product of four and a number"
(= n - 7): "Is equivalent to seven less than the same number in equation form."
Subtract 8 from both sides:
4n = n - 15
Subtract n from both sides:
3n = -15
Divide both sides by 3:
n = -5
It is 31%.
To explain, you have to just have to multiply 0.31 by 100, and then add a percentage sign.
Let x = width of border
Area is given to be 7 square feet or 49.
49 = (2x + 2)(2x + 4)
Solve for x.
