Answer:

Step-by-step explanation:
From the question we are told that:
Generally the equation if differentiated is mathematically given by

Where
y'=0

Factorizing,We have

Therefore
The critical points are

Answer: 1, 13 is the answer
Answer:
z=20
Step-by-step explanation:
(2z + 16) +124 =180
2z + 16 +124
2z + 140 = 180
2z -140 -140
2z = 40
z = 20
Answer: neither
Step-by-step explanation: because 64 kg and 640000g are equal masses.