kate spent 3/5 of her money on a manicure and had $45 left. how much money did she have at first?(PLEASE SHOW STEPS!)
2 answers:
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Answer:
Jeans-$19.95
Step-by-step explanation:
The expression for each individual's purchase can be expressed as:
We make j the subject in equation i then substitute in ii:
Hence, it costs $19.95 per pair of jeans and $12.50 per shirt pair.
proofs:
<h2>S subset S Union T</h2>We want to prove
Let . By definition
is the set that contains the elements of
and the elements of
. Then
must be in
. As
was arbitrary, we conclude that
.
This proof is analogous to the previous one. In fact, this result is the same result as the previous one.
<h2>S Intersection T subset S </h2>We want to prove
Let . By definition of the intersection
should be in
and also in
. Then, we already saw that
. As
was arbitrary we can conclude that
.
This is the same result as the previous one. There is no need to prove it anymore, but if you wish, you can reply the exact same proof.