Answer: its square.
Step-by-step explanation:
add the 2 equations together
x+y =9
x-y =7
----------
2x = 16
divide by 2
x=8
x+y =9
substitute in x=8
8+y =9
subtract 8 from each side
y =1
(8,1)
Answer:
0.36
Step-by-step explanation:
Given that:
Mean = 70
Standard deviation = 5.5
score (x) = 72
Formular for obtaining Standardized score (Zscore) :
Zscore = [score (x) - mean] / standard deviation
Hence,
Zscore = (72 - 70) / 5.5
Zscore = 2/ 5.5
= 0.3636363
Zscore = 0.36 ( 2 decimal place)
Answer:
48 people
Step-by-step explanation:
1. 4/50 = x/600 do 4x600 and 50 times x
2.50x=2400
3. divide both sides by 50 to get a result of x=48.
Answer:
Situation <u>3</u> does not represent a function.
This is because <u>the same number of credit cards can have different totals.</u>