Q7. What is the sum of the first 50 terms of the
series 2 +17 +32 +47 +...?​

18475

Step-by-step explanation:

given sequence is in A.P.

sum of n terms of an A.P. is =

here n = 50

a = 3

d= 15

ans is 18,475

Since the triangle has 3 congruent angles, we can then infer that it is an equilateral triangle.

Remember that equilateral triangles have the same side lengths. Thus, we can set the length of one side equal to the length of another side.

Our answer is x = 4.