Answer:
The probability is 0.081
Step-by-step explanation:
Here, we want to calculate the probability that the 3rd inspection will be defective.
What this means is that the first two would
not be defective.
Probability of having a defective DVD = 10% = 10/100 = 0.1
Probability of not having a defective DVD = 1 -0.1 = 0.9
So the probability of third being defective = Probability of first not defective * Probability of second not defective * Probability of third defective 
= 0.9 * 0.9 * 0.1 = 0.081 
 
        
             
        
        
        
Answer:
30m
Step-by-step explanation:
A=πr²
225π=πr²
225=r²
r=√225
r=15
d=2r
d=2×15
=30m
 
        
             
        
        
        
The answer is a = 
Step-by-step explanation:
<em>1. Convert the mixed fraction to an improper fraction</em>
To find the numerator, multiply the denominator by the whole number and add the numerator to it.
The denominator remains the same.
So, 2 will be
 will be 
<em>2. Now the equation is,</em>
 a -
 a -  a =
 a =  +
 +  a
 a
<em>3. Take LCM on both sides. </em>
For the left side, multiply the first fraction by  and multiply the second fraction by
 and multiply the second fraction by 
 a -
 a -  a =
 a = 
<em>4. Solve by making a the subject</em>
 =
 = 
 =
 = 
 =10+8a
 =10+8a
 = 10 + 8a
 = 10 + 8a
a = 2(10 + 8a)
a = 20 + 16a
a-16a = 20
-15a = 20
a = 
a = 
Therefore, the answer is a = 
Keyword: Equations
Learn more about equations at
#LearnwithBrainly
 
        
             
        
        
        
Answer:
$12500
Step-by-step explanation:
Given that:
Salary plan 1:
Weekly salary of $500.
And a commission of 4%.
Salary plan 2:
Straight commission of 8%.
To find:
Weekly sales for which both the plans will make the same sales?
Solution:
Let the weekly sales = $
As per question statement:
Salary as per Plan 1 = $500 + 4% of 
Salary as per Plan 2 = 8% of 
Putting both the salaries to equal to find the total weekly sales.
$500 + 4% of  = 8% of
 = 8% of 

Therefore, the answer is:
For the sales of $12500, the salary will be same from both the plans.
 
        
             
        
        
        
D; 1 and 6 are being added together first then divided by 7, so need the parentheses around 1 and 6