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lina2011 [118]
3 years ago
15

You and a friend decide to sell cookies to raise

Mathematics
1 answer:
____ [38]3 years ago
6 0
Combined like terms 11d+8
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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
Giuliana wants to find the mass of a watermelon. What unit should she use?
KatRina [158]
If it is in the metric system kilograms <span />
7 0
3 years ago
Read 2 more answers
Kayla is on level 12 of a new game. Everyday she completes 6 new levels. Maddy is on level 28 of the same game. Everyday she com
ankoles [38]

Answer:

Kayla and Maddy will be in the same level in 4 days.

Step-by-step explanation:

Kayla: y = 6x + 12

Maddy: y = 2x  + 28

6x + 12 = 2x + 28

Subtract 2x from both sides;

4x + 12 = 28

Subtract 12 from both sides;

4x = 16

Divide both sides by 4;

x = 4

3 0
3 years ago
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If rs =3x + 1, st = 2x- 2 ,and rt = 64,find the value of x
stealth61 [152]
             rs + st = rt     Plug in the values
3x + 1 + 2x - 2 = 64   Combine like terms (1 and -2)
       3x -1 + 2x = 64   Combine like terms (3x and 2x)
            -1 + 5x = 64   Add 1 to both sides
                  5x = 65   Divide both sides by 5
                    x = 13
3 0
3 years ago
If half of the 100 passengers are​ men, find the probability that the mean height of the 50 men is less than 76 in.
goldenfox [79]

Answer:

54in

Step-by-step explanation:

5 0
3 years ago
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