Answer:
b. -3
Step-by-step explanation:
Cross multiply
5x = 3(x - 2)
Distributive property
5x = 3x - 6
Subtract 3x from both sides
2x = -6
Divide both sides by 2
x = -3
Answer:
45
Step-by-step explanation:
90+45=135 180-135 is 45
Answer:
Step-by-step explanation:
Assuming a normal distribution for the amount spent by Canadian households for high-speed broadband access, the formula for normal distribution is expressed as
z = (x - u)/s
Where
x = amount spent by the Canadian households.
u = mean amount spent monthly.
s = standard deviation
From the information given,
u = $80.63 CDN
s = $27.32 CDN
We want to find the probability that the average amount will exceed $85. It is expressed as
P(x greater than 85) = 1 - P(x lesser than or equal to 85)
For x = 85
z = (85 - 80)/27.32 = 0.18
Looking at the normal distribution table, the corresponding z score is 0.57142
P(x greater than 85) = 1 - 0.57142 = 0.43
Answer:
6
Step-by-step explanation:
