Answer:
b) ( N c ∩ D ) ∪ ( N ∩ D c )
Step-by-step explanation:
Let's see each option:
a) N ∪ D
This includes those who likes both, so this is not correc.t
b) ( N c ∩ D ) ∪ ( N ∩ D c )
Nc is the complement of N. That is those who do not subscribe to news magazine. Intensected with D, those are who do not subscribe to the news magazine but do to the daily informer. By the same logic, the second intersection are those who do subscribe to news magazine but not to the daily informer. This is the correct answer
c) N c ∩ D
This includes only those who subscribe to the daily informer but not to the news maganize. It also needs those who subscribe to the news magazine but not to the daily informer.
d) ( N ∩ D )c
This also involves those who do not subscribe to any of these news sources.
e) ( N c ∪ D ) ∩ ( N ∪ D c )
Wrong... Intersection of those who subscribe to the daily informer but not the news magazine and those who subscribe to the news magazine but not to the daily informer. This is the empty set.
Answer: 2x+5 = 50
Step-by-step explanation:
Given the total length of the piece of wood is 50" long. If the wood is sawed into two pieces, let's say the length of the two wood pieces are 'x'and 'y'.
This means x + y = 50... (1)
If one piece is 5" longer than the other, it can be written as;
y = x+5... (2) (this means wood of length y is 5" longer than that of wood of length x. To write the problem as an equation, we will substitute equation 2 into 1 to have
x + y = 50
x + (x+5) = 50
2x+5 = 50 (The will be the required equation where x is the length of the shorter piece of wood)
Distribute 6
6x-12 - 2x =4x
Combine like terms
4x - 12 = 4x
Subtract 4x from both sides
-12=0 no solution
Answer:
00
Step-by-step explanation:
-2 degrees Celsius and -2 degrees celcius