Answer:
25xy=L
y=W
Step-by-step explanation:
The width and length are
25xy=L
y=W
We factor this out and then we get 2 terms which are our factors
Could i see a picture please
We are to show that if X ⊆ Y then (X ∪ Z) ⊆ (Y ∪ Z) for sets X, Y, Z.
Assume that a is a representative element of X, that is, a ∈ X. By the definition of union, a ∈ X ∪ Z. Now because X ⊆ Y and we assumed a ∈ X, then a ∈ Y by the definition of subset. And because a ∈ Y, then a ∈ Y ∪ Z by definition of union.
We chose our representative element, a, and showed that a ∈ X ∪ Y implies that a ∈ Y ∪ Z and this completes the proof.
Answer:
c
Step-by-step explanation:
C becasue 1 week = 15 mulitipication facts memorized
