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Rudik [331]
3 years ago
13

At the book fair, books were on sale for 15% off the regular price. Hannah bought a book that had a regular price of $6.00. What

is the total amount, before tax, that she saved by buying the book on sale?
Mathematics
1 answer:
Semmy [17]3 years ago
3 0

Answer:

Step-by-step explanation:

discount = 15% of $6 = 0.15×$6 = $0.90

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Give an example of each of the following or explain why you think such a set could not exist.
Oksanka [162]

Answer:

a.No

b.No

c.No

Step-by-step explanation:

a.No,Such set does not exist .A set of natural numbers is N

Every point of this set is an isolated point but no accumulation point

Accumulation point:It is defined as that point a of set Swhich every neighborhood contains infinitely many distinct point of set

(a-\epsilon,e+\epsilon)\cap S-{a}\neq\phi

Isolated point : it is defined as that point a of set S which neighborhood   does not contain any other point of set except itself

(a-\epsilon0,a+\epsilon)\cap S-{a}=\phi

Interior point of set :Let a\in S .Then a is called interior point of set when its neighborhood is a subset of set S.

a\in(a-\epsilon,e+\epsilon)\subset S

When a set is uncountable then interior point exist it is  necessary for interior points existance .

Boundary points :Let a\in S .If every non empty neighborhood of a  intersect S and complement of S.

Every member of  a set is a boundary point

b.No, such set does not exist .A non empty set with isolated point then the set have no interior points .By definition of interior point and isolated point .For example.set of natural numbers

c.No, Such set does not exist ,for example set of natural every point is an isolated point and boundary point.By definition of  boundary point and isolated point

6 0
3 years ago
Sooo ummm help... 15-p=p-3
bearhunter [10]

Answer:

p = 9

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Consider an angle with a measure of θ=225∘.
wel

Answer:

cos 225° = -\frac{\sqrt{2} }{2}

sin 225° = -\frac{\sqrt{2} }{2}

tan 225° = 1

Step-by-step explanation:

I cannot sketch a diagram, but a 225° angle is a 3rd quadrant angle and the reference angle is 45°   (225 - 180 = 45)

cos and sin are negative in the 3rd quadrant and the tan is positive

cos 225° = - cos 45° = -\frac{\sqrt{2} }{2}

sin 225° = -sin 45° = -\frac{\sqrt{2} }{2}

tan 225° = tan 45° = 1

8 0
2 years ago
What is the interest rate on Mackenzie’s account?
hjlf
It would be B. because the rise over run is 31.25 over 5 which is divided to 6.25 which is rounded to 6.3
3 0
2 years ago
Read 2 more answers
Which expressions are equivalent to 3x+3(x+y).
jenyasd209 [6]
A.
3x+3 (x+y)
distribute what is inside the bracket.
3x + 3x +3y
add the like terms
6x+3y
6 0
3 years ago
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