Answer: 1,6,11,16,21,26
Step-by-step explanation:
The common difference is 5 (n+5)
x^2 + 4x + 3 + 1 = (x + 2)^2
So 1 need to be added.
Answer:
D
Step-by-step explanation:
x + 5 + 3x + C = 180 All triangles have 180 degrees.
4x + 5 + C = 180
But C must be equal to 3x. Notice the markings on the lets of the triangle.
4x + 5 + 3x = 180
7x + 5 = 180 Subtract 5 from both sides
7x = 180 - 5
7x = 175
x = 25
But angle C = 3x
C = 3*25
C = 75
