Answer:
4 inches
Step-by-step explanation:
We can set up a proportion to find out the length value (assuming x is the length of the frame)

We multiply 12 and 3...

And divide by 9...

So, the length of the frame is 4 inches.
Hope this helped!
Answer:
The first one
Step-by-step explanation:
If my math is right it should be b
Answer:
- Total number of cars having no defection

- Total number of cars out of 560 will have defects =

Step-by-step explanation:
As
- A car factory checks 320 cars, and
Total number of cars = 560
The number of cars defected out of the cars that have
been checked = 
The equation of the scenario will be:
⇒ 
so
- Total number of cars having no defection

- Total number of cars out of 560 will have defects =
