Which statement describes a parallelogram that must be a square? question 4 options: a parallelogram with a pair of congruent consecutive sides and diagonals that are congruent. a parallelogram with a pair of congruent consecutive sides and diagonals that bisect each other. a parallelogram with a right angle and diagonals that are congruent. a parallelogram with diagonals that bisect each other.

  about 5.6 days

step-by-step explanation:

we can fill the given information into the decay equation and solve for the value of t at which half the sample remains.

the half-life is about 5.6 days.

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.