Help I'll give brainliest

Factor : 64x^5( -3x^3 - 6 ) - 2x^4 (-3x^3-6)

Mackenzie needs to determine whether the rectangles are proportional. which process could she use? check all that apply.

The birth weights of newborn babies in the unites states follow in a normal distrubution with a mean of 3.4 kg and standard deviation of 0.6 kg. reaserches interested in studying how. children gain weights decide to take random samples of 100 newborn babies and calculate the sample mean birth weights for each sample

What would be the reasons for lines 3 and 4? a. addition property; subtraction property b. addition property; solve c. substitution property; subtraction property d. substitution property; prove