Answer:
Only Katie is correct.
Step-by-step explanation:
Suppose the amount is $50.
Find the 40% by Tom's method:
50 / 100 = 0.5
0.5 * 4 = $2
- which is 4% of 50.
By Katie's method
50 / 5 = 10
10 * 2 = $20
- which is 40% of 50.
To convert a decimal to a percentage, you move the decimal place two spaces to the right.
2.5 would become 250%.
I hope this helps!
Answer:
1024.
Step-by-step explanation:
If a set has n elements, then
Number of subsets of that set
In the given problem,
Number of elements in a set = 10
So,
Number of subsets of that set
Therefore, number of subsets for the set which contains the 10 elements is 1024.
Answer:
The given relation
is a function.
Step-by-step explanation:
A relation
is given.
It is required to determine whether the given relation is a function.
To determine whether the given function is a relation, identify the domain and range and then check whether the given relation is a function.
Step 1 of 1
The given relation is {(a, b),(c, d),(e, d)}.
The set of the first components of each ordered pair is called the domain.
From the relation, the domain is {a, c, e}.
The set of the second components of each ordered the range.
From the relation, the range is {b, d, d}.
The given relation is a function. But it is not a one-to-one function.