0.267 es la respuesta redondeada a la milésima más cercana
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
Factor : 8y - 36
Go through all of the answer choices & see which one is correct.
a) -4 (2y + 9)
You don't even have to fully simplify this, just by looking at the -4, you already know that this is incorrect because you need to have a positive 8. So, A is incorrect.
b) 8 (y - 4)
Simplify.
8y - 32
Incorrect because it is not equal to the original equation.
c) 2 (4y - 18)
Simplify.
8y - 36
Correct answer because it is equal to the original equation.
d) 4(2y - 9)
Simplify.
8y - 36
D is also correct.
So, your answer is : (C) and (D) are your answers.
~Hope I helped!~
Answer:
4x+5y+23
Step-by-step explanation:
4(x+2)+5(y+3)
4x+8+5y+15
4x+5y+8+15
4x+5y+23
Answer:
A
Step-by-step explanation:
