Answer:
Step-by-step explanation:
Just add like terms
Because 4 + 4 = 8 and you know that 3 is one less than one you could do 8-1= 7 so 4 + 3 = 7
Answer:
540°
Step-by-step explanation:
The sum of the interior angles of a polygon is
sum = 180° (n - 2) ← n is the number of sides
here n = 5, hence
sum = 180° × 3 = 540°
Answer:
13.5 in ^2
Step-by-step explanation:
The area of a trapezoid is given by
A = 1/2 (b1+b2) *h where b1 and b2 are the base length and h is the height
A = 1/2 (4+5) *3
= 1/2 (9) *3
= 1/2 (27)
= 13.5 in ^2