Question

answer me fast guys​

Answer 1

Answer:

hope it helps......hahahaha

Answer 2

Step-by-step explanation:

Given that A.P consists of three terms.

Let it be a - d, a, a + d.

Now,

(1)

Sum of three terms is 15.

a - d + a + a + d = 15

=> 3a = 15

=> a = 5

(2)

Sum of their squares of extremes is 58.

(a - d)^2 + (a + d)^2 = 58

=> a^2 + d^2 = 29

=> d^2 = 4

=> d = 2, -2

When d = 2:

a - d = 3

a = 5

a + d = 7

When d = -2

a - d = 7

a = 5

a + d = 3

Therefore,

The three terms are 3,5,7..

Now,

We have to find sum of 50 terms:

Here,

n = 50, a = 3, d = 2.

sn = (n/2)[2a + (n - 1)d]

= (50/2)[6 + 49 * 2]

= 25[104]

= 2600.

Hope it helps!