Math experts what is the value of x?

X=107 because the sides of a hexagon must add up to 720

Adozen is 12, and your needing to calculate the weight of one medium egg, so i would do 21/12=1.75 per egg, and check your answer by doing 1.75 * 12= 21 : ) : ): ): ): ) i hoped i

Yes, endothermic means it turns cold. and some chemical changes include change of tempature.