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kherson [118]
2 years ago
12

100 POINTS

Mathematics
1 answer:
Agata [3.3K]2 years ago
6 0

Answer:

see the attachment photo!

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A set S of strings of characters is defined recursively by 1. a and b belong to S. 2. If x belongs to S, so does xb. Which of th
alukav5142 [94]

Answer:

a) a

b) ab

e) bbbbb

Step-by-step explanation:

We are given the following in the question:

a, b \in S

x \in S \Rightarrow xb \in S

a) a

It is given that a \in S

b) ab

\text{If }a \in S\\\Rightarrow ab \in S

Thus, ab belongs to S.

c) aba

This does not belong to S because we cannot find x for which xb belongs to S.

d) aaab

This does not belong to S because we cannot find x for which xb belongs to S.

e) bbbbb

\text{If }b \in S\Rightarrow bb \in S\\\text{If }bb \in S\Rightarrow bbb \in S\\\text{If }bbb \in S\Rightarrow bbbb \in S\\\text{If }bbbb \in S\Rightarrow bbbbb \in S

Thus, bbbbb belongs to S.

8 0
3 years ago
When making a right turn be sure to keep the vehicle far away from the curb or road?
Elodia [21]
Road because you want to turn into the lane that is by the curb
7 0
3 years ago
Ruby ate 1/3 (fraction) of a pizza, and Angie ate 1/5 (fraction) of the pizza. How much pizza did they eat in all?
Gnom [1K]
Ruby and Angie ate 8/15 of the pizza all together
3 0
4 years ago
Evaluate the function f(x) = -4x + 2, when x = -1.
Mkey [24]

Answer:

Option D

Step-by-step explanation:

f(x) = -4x + 2

f(-1) = -4(-1) + 2 = 4 + 2 = 6

3 0
3 years ago
The figure below shows the parcel of land on, which dallas, the zoo keeper , confines his zebras. His rule of thumb dictates tha
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Unfortunately, you haven't shared the "figure below" that shows the dimensions of this parcel of land.  Without being able to calculate the area of the parcel, you cannot really answer this question exactly.

Suppose that the area of the parcel were 6000 square meters.  Dividing that by 1500 square meters, we get 4, which represents the number of zebras that can live on this (example) parcel.

Figure out the area of your parcel, in square meters, and thend divide your result by 1500 square meters.  This will give your your answer.  Please note:  your answer will be a COUNT of zebras.  "meters" does not belong in this answer.
6 0
4 years ago
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