11 for the first one and 12 for the second one
Answer:
The probability is 0.31
Step-by-step explanation:
In this question, we are tasked with calculating the probability that a random plumber called at Denver will charge an amount greater than $86 given the mean and the standard deviation.
Firstly, we calculate the standard score of $86 using the mean and the standard deviation.
Mathematically;
z-score = (x-mean)/SD
where x = 86, mean = 84 and SD = 4
z-score = (86-84)/4 = 2/4 = 0.5
Hence, we want to calculate P(z ≥ 0.5)
Using standard table
P( (z ≥ 0.5) = 1 - P(z ≤ 0.5) = 1 - ( 0.19146 + 0.5) = 0.30854
To the nearest hundredth = 0.31
Answer:
Step-by-step explanation:
2(6²)-3(6)+2=y
(2x36)-18+2=y
72-18+2=y
y=52 BODMAS
It may also be 56 tho im not sure if thats right
Answer:
2+2 is 4
Step-by-step explanation:
-1 is 3 quick maths
I am pretty sure it is the fourth choice, mThis is because 54+81=135 and angle YXW is 135°
