Aresearcher wants to determine if daily walks together strengthen a marriage. one group of wives and one group of husbands are selected and take walks each day. after 2 weeks, all are asked if they felt their marriage was stronger based on the walks and the results of the two groups are compared. to be a valid matched pair test, what should the researcher consider in creating the two groups?

c 1 hour

step-by-step explanation:

m = 2e

m = 2 so 2 = 2e

1 = e

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.