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alina1380 [7]
3 years ago
14

Three more than twice a number r

Mathematics
1 answer:
sukhopar [10]3 years ago
8 0

Answer:

2r + 3

Step-by-step explanation:

probably

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A set W of strings of symbols is defined recursively by 1. a, b, and c belong to W. 2. If x belongs to W, so does a(x)c. Which o
Vadim26 [7]

Answer:

a. a(b)c  

b. a(a(b)c)c  

d. a(a(a(a)c)c)c          

Step-by-step explanation:

We are given the following in the question:

a,b,c \in W\\\text{If } x \in W \Rightarrow a(x)c \in W

a. a(b)c

It is given b belongs to W.

b \in W\\\Rightarrow a(b)c \in W

b. a(a(b)c)c

a(b)c \in W\\\Rightarrow a(a(b)c)c \in W

c. a(abc)c

a(abc)c does not belong to W because we cannot find x in W such that a(abc)c belongs to W.

d. a(a(a(a)c)c)c

a \in W\\\Rightarrow a(a)c \in W\\\Rightarrow a(a(a)c)c \in W\\\Rightarrow a(a(a(a)c)c)c

e. a(aacc)c

a(aacc)c does not belong to W because we cannot find x in W such that a(aacc)c belongs to W.

8 0
2 years ago
Pls help me fast and give me the steps pls<br> 1+7p-40=80
valentinak56 [21]

Answer:

17

Step-by-step explanation:

1+7p-40=80

-39+7p=80 Move constant to the right

7p=80+39 add the numbers

7p=119 divide both sides by 7

4 0
3 years ago
Read 2 more answers
Mari has a part time job. She earns $6 an hour. She makes at most $207.00 a week. What is the greatest number of hours that she
sergejj [24]

Answer:

If Mary earns 7$ an hour, we need to multiplicate 7$ by the number of hours worked for the entire week so we can get the salary per week.

Step-by-step explanation:

it's correct

8 0
3 years ago
The table shows the advertised cost and total cost after sales tax is included to two items purchased.
Softa [21]

Answer:

t = 0.05a

t = 1.05a

Step-by-step explanation:

6 0
2 years ago
A building is in the shape of a right prism with a regular hexagon base and a dome in the shape of a hemisphere covering part of
coldgirl [10]

Answer:

6

2

Half of a

Circle

Step-by-step explanation:

7 0
3 years ago
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