Answer:
x² +18x +81
Step-by-step explanation:
(a+b)²=a²+b²+2ab
(x+9)² = x²+9²+2*x*9= x² +18x +81
Answer:
x = 4.5 is the answer to the question
10/45 - 9/45 is what i would think someone can fact check though.
Answer:
28?
Step-by-step explanation:
Answer:
h0 : u = 15 amps
h1 : u ¥ 15 amps
Note: h0 is the null hypothesis
h1 is the alternative hypothesis
u is the mean
¥ is used to represent 'not equal to'