X=3/5
do you need an explanation?
Answer:
1. 2/3
2. 15/2 (7.5)
Step-by-step explanation:
1. Scale down from larger to smaller:
6/9 = 4/6 = 2/3
ΔDEF ⇒ ΔABC 
2.
or 7.5
I hope this help you
Answer:
Option C
A = 390 
Step-by-step explanation:
The image shows a figure composed of a rectangle and a triangle.
We know that the area of a rectangle is:
Ar = length * width
Then, using the data shown in the image, we have to:
Ar = 20(15) = 300 
Then, the area of a triangle is:

So:


Finally the area of the figure is:

6 burritos since 3/4 = 6/8
1/8 * 6 = 6/8
Answer:
It is very unusual as the probability to get a sample average of 75 or more customers if the manager had not offered the discount is 0.006
Step-by-step explanation:
We are given the following information in the question:
Mean, μ = 50
Standard Deviation, σ = 10
We are given that the distribution of number of customers is a bell shaped distribution that is a normal distribution.
In an attempt to increase the number of weekday customers, the manager offers a $10 membership discount on 5 consecutive weekdays and the sample mean of customers during this weekday period jumps to 75.
Formula:
a) P(sample average of 75 or more customers if the manager had not offered the discount)
P(x > 75)
Calculation the value from standard normal z table, we have,

It is very unusual as the probability to get a sample average of 75 or more customers if the manager had not offered the discount is 0.006
b) Yes, the managers discount strategy worked as it increased the average number of customers from 50 customers to 75 customers.