Hi there!
To simplify this equation we first need to distribute.
(3)(4x) + (3)(6) + - 9x
= 12x +18 + - 9x
Next, combine like terms.
= 12x + 18 + - 9x
= (12x + - 9x) + (18)
= 3x + 18
In simplified form, 3 (4x + 6) - 9x is 3x + 18.
Hope this helps!
The area of any regular polygon is equal to one half the product of the apothem and the perimeter of the polygon. A regular polygon is any polygon that has equal length of its sides. A pentagon has 5 sides so if it is a regular pentagon then the perimeter is 5 times the length of one side. The apothem of a polygon is the length of a line from the center of the polygon to the middle of one of its side. We calculate the area as follows:
Area = apothem (perimeter) / 2
Area = 7 ft (5 (10 ft)) / 2
Area = 175 ft^2
Answer:
3.5 and 3½
Step-by-step explanation:
Half of 7 is positive 3.5 aka 3½. It can't be -7/2 or -3.5 because they result in a negative number. It also can't be 7.2 because that's too big of a number.
