Answer:
7
Step-by-step explanation:
σ = 4 ; μ =?
8.52 to the left of X
.
P(X < 8.52) = 64.8%
P(X < 8.52) = 0.648
Using the Z relation :
(x - μ) / σ
P(Z < (8.52 - μ) / 4)) = 0.648
The Z value of 0.648 of the lower tail is equal to 0.38 (Z probability calculator)
Z = 8.52 - μ / 4
0.38 = 8.52 - μ / 4
0.38 * 4 = 8.52 - μ
1.52 = 8.52 - μ
μ = 8.52 - 1.52
μ = 7
X2 is double the amount of x1
Answer: $450
Step-by-step explanation:
We can form an equation representing the problem. The question is essentially asking 60% of what is equal to $270. If we define that what as a variable 'x', we get the following:
Multiply both sides by 100:
Divide both sides by 60 to solve for the value of 'x':
Answer is 450 bucks
We can check this answer by taking 60% of $450. In principal, this should return the discount of $270.
Yup, it checks out
Answer:
The four main types of transformations are reflection, rotation, translation, ans dilation. All of these transformation retain their original size except for dilation.
Hope this helps.
Step-by-step explanation:
Answer:
4/15
Step-by-step explanation:
1/3=5/15
2/5=6/15
6+5=11
15-11=4
4/15 books a fiction
