Answer:
Part A: 10 complete capes.
Part B: 120 minutes.
Step-by-step explanation:
Part A:
Given:
Amount of fabric required for 1 cape is 1 yard.
Total amount of fabric bought by Zoe's mom are 10 yards.
Using unitary method,
∵Number of capes made from 1 yard fabric = 1
∴ Number of capes made from 10 yard fabric = 
Part B:
Given:
Time taken to make 1 cape is 12 minutes.
Using unitary method,
∵Time taken to make 1 cape = 12 minutes.
∴ Time taken to make 10 capes = 
minutes.
Solution :
We have to prove that 
(De-Morgan's law)
Let 
then 
and 
and so 
and 
.
Thus, 
and so 
Hence, 
.........(1)
Now we will show that 
Let ⇒
Thus x is present neither in the set A nor in the set B, so by definition of the union of the sets, by definition of the complement.
and 
Therefore, 
and we have .............(2)
From (1) and (2),
Hence proved.
Answer:
in school a , 67.3 % of leaving students go to university.
in school b ,90.7% of leaving students go to university
Step-by-step explanation:
Answer:
-6
Step-by-step explanation:
