Answer:

Step-by-step explanation:
Given
--- sample
--- degeneration rate
From the findings, we have:
--- tested positive
--- total test
Required
The positive predicted value (PPV)
This is calculated using:

i.e.


Express as percentage


Step-by-step explanation:
To figure out your x-intercepts and y-intercepts you have to redo the equation and make it equal to zero.
Step 1: 8x + 9y - 72 = 0
Step 2: 8x + 9y = 72
Now you can figure out your intercepts! As long as you use the STANDARD FORM EQUATION which is Ax + By = C
Y-INTERCEPT (vertical line): (
, 0 )
X-INTERCEPT (horizontal line): ( 0 ,
)
Insert your numbers how it shows in the standard form equation and you should get something like this:
Y-INTERCEPT: (
, 0 )
<em>Simplified Y-INTERCEPT: </em>( 8 , 0 )
X-INTERCEPT: ( 0 ,
)
<em>Simplified X-INTERCEPT: </em><em> ( 0 , 9 )</em>
<em />
Insert that into your graph and you should be able to get your answer.
Answer:
Area of one piece of pizza ≈ 12.83 inches
Step-by-step explanation:
First of all let's calculate the area of the pizza.
Pizza is circular in shape, thus,
Area; A = πr²
We are given the radius;r = 7 inches
So, A = π(7²) = 153.94 in²
Now, since the area is divided into 12 equal sized pieces, thus we will divide the total area we got by 12 to get the area of one piece.
Area of one piece of pizza = 153.94/12 ≈ 12.83 inches
Answer:

if not solving simultaneously, that is the result
Answer:
2
2
−
4
Step-by-step explanation: