Answer:
A. 26i
B. 36i^2 + 60x + 25
C. 64x^2 + 112x + 49
Step-by-step explanation:
To get answer in question A, B, and C, use FOIL method
FOIL Method:

(pretend x is i)
Question A:

Question B:

Question C

Number 1 : A
Number 2: D
Number 3:B
Number 4:C
Number 5:C
Answer:
.7147
Step-by-step explanation:
Let P be the probability of 55 families having mean more than 17
P { (17-17.2)/ (2.5/√55) }
P(- 0.5933 )
= - .2765 [ From the z table ]
P be the probability of 55 families having mean less than 18
P { (18 -17.2)/ (2.5/√55) }
P( 2.3732 )
= .9912 [ From the z table ]
Probability of mean between 17 and 18
= .9912 - .2765
= .7147
Answer:
NBzqjkc
Step-by-step explanation:
kjsnmjcbhadsK
Answer: -300,-50,-4
Step-by-step explanation: