Which expression represents the second partial sum for Infinity Σ 3(1/2) HURRY PLEASE , I need help on a couple of them

Step-by-step explanation:

The given expression has the first term n=1, so exponent = n-1 = 0

Similarly, for the second term n = 2, n-1 = 1

These exponents eliminate options 2 and 4.

Furthermore, the base is a fraction of 1/2, which applies to options 1 and 2 only.

The only viable option left that satisfies all conditions is option 1, which has exponents 0 and 1, with a base of (1/2).

step-by-step explanation:

the correct option is 2.

step-by-step explanation:

according to the given information triangle abc is a right angle triangle with right angle at a. segment ab is 5 and segment ac is 7. point d is on segment bc and angles adb and adc are right angles.

it is given that triangles abd, cad, and cba are similar.

two triangles are similar if their corresponding sides are proportional.

in triangle cba, using pythagoras theorem

                      )

triangle abd and cba are similar,

                            (2)

triangle cad and cba are similar,

                      )

using (1), (2) and (3), we get

hence proved.

therefore option 2 is correct.