Which property justifies the equation 0.5 (8.4 - 1.6) = 0.5 (8.4) - 0.5 (1.6) ? Help please

Aparallelogram has two side lengths of 5 units. three of its sides have equations y = 0, y = 2, y = 2x. find the equation of the fourth side.

Aproduction manager test 10 toothbrushes and finds that their mean lifetime is 450 hours. she then design sales package of this type of toothbrush. it states that the customers can expect the toothbrush to last approximately 460 hours. this is an example of what phase of inferential statistics

Acircle has a circumference of 7.850 units. what is its radius?