Answer:
15.8
Step-by-step explanation:
round!
Answer: Pattern B
Step-by-step explanation: A quadratic relationship involves x squared. Pattern B has the relationship x squared + 1 between the step number and the number of dots
Answer:
10*15= 150
150 *8= 1,200
1,200 ÷ 2 = 600.
Step-by-step explanation:
Since the sum of the angles of a triangle = 180°
Then <span>80º + (2x + 2)º + 5xº = 180</span>°
82° + (7x)° = 180°
(7x)° = 180° - 82°
x = 98° ÷ 7
∴ x = 14