Answer:

Step-by-step explanation:

In order to eliminate one of the variables you can add both equations.

Replace in one of the main equations to find y

Replace in one of the main equations to prove that your answers are correct.

Answer:

Step-by-step explanation:
Given


Required
Determine the fraction of Red
First, we need to link the given ratios.
Since yellow is present in both ratios, we start by making the ratio of yellow equal in both ratios
Multiply this ratio by 5

This becomes

Similarly, multiply this ratio by 3

This becomes

At this point, we have:
and 
Combine

The fraction is then calculated as:

This gives


The standard deviation for the number of defects per batch is 0.5
<h3><u>Solution:</u></h3>
<em><u>In binomial distribution, standard deviation is given as:</u></em>

Where "n" is the number of observations
"p" is probability of getting success
We are given that ,
Total batches of televisions : n = 25
The probability of defects : p = 1% = 0.01
Here success is getting defective batch
Then, the standard deviation for the number of defects per batch will be:
Plugging in values in formula, we get

Therefore, the standard deviation for the number of defects per batch = 0.5
Answer:
74.2
Step-by-step explanation:
53 x .4 = 21.2
21.2 + 53 = 74.2
Answer:
The answer is B
Step-by-step explanation: