It is zero *more characters to fulfill answer requirements*
Therefore, the sentence "A triangle is isosceles if and only if it has two congruent (equal) sides" is <span>biconditionaL</span>
If you work out the equation the answer would be 5 but its not a definite answer.
4×77. 75=311
4×31. 75=127
4×19. 25=77
4×82=328
24? I am not entirely sure but I think a4=24
Reason: if a1 equals 6 then I would like to think you would multiply 6 by 4 to get the value of a4 (I haven’t done this type of math in a while)