1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
White raven [17]
3 years ago
13

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

f the following strings belong to W ? a. a(b)c b. a(a(b)c)c c. a(abc)c d. a(a(a(a)c)c)c e. a(aacc)c
Mathematics
1 answer:
Vadim26 [7]3 years ago
8 0

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.

You might be interested in
How many dominos are needed to complete the triangle?
solong [7]

Only 3 is needed

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
10000000x1256y+800-2a=?
podryga [215]

Answer:

2(5000000x1256y+400−a)

Step-by-step explanation:

4 0
3 years ago
Monthly rent at Lake View Apartments has increased annually and is modeled by the exponential equation y = 2,400(1.04)x. What is
AfilCa [17]

Answer:

The percent increase per year is 4%

Step-by-step explanation:

we have

y=2,400(1.04^x)

This is a exponential function of the form

y=a(b^x)

where

y represent the monthly rent at Lake View Apartments

x represent the number of years

a is the initial value (y-intercept)

b is the base

r is the rate or percent increase

b=(1+r)

The percent increase per year is the base of the exponential function decreased by 1.

so

r=b-1

In this problem we have

a=\$2,400 ---> initial value

b=1.04\\r=1.04-1=0.04=4\%

Therefore

The percent increase per year is 4%

7 0
3 years ago
PLZZZZ HELP FAST
babymother [125]

Answer:

They will have values in common

Step-by-step explanation: I GUESSED

5 0
3 years ago
Read 2 more answers
Solve 1 divided by 2 (4x 8)-8 over 2
nika2105 [10]
The answer to the question is 12
3 0
3 years ago
Other questions:
  • How to solve exterior angle for right triangle?
    10·1 answer
  • A recipe calls for of a cup of milk for 11 cookies. How many cups of milk are needed to make 99 cookies?
    8·2 answers
  • Give formula to calculate Selling price when profit is given in percentage. ​
    11·1 answer
  • "In quadrilateral QRST, m∠Q is 68°, m∠R is (3x + 40)°, and m∠T is (5x − 52)°. What are the measures of ∠R , ∠S , and ∠T ? Write
    7·2 answers
  • 3 step equations, I really need help on these with all the work:
    5·1 answer
  • What is the complex conjugate of 3i - 2?
    13·1 answer
  • What is the expressions factor for -12x+24-18y?
    15·2 answers
  • ASAP<br><br> - How did you get the answer?
    7·2 answers
  • A. 20 mph<br> B. 35 mph<br> C. 70 mph<br> D. 100 mph
    15·2 answers
  • Amy can clean the interior of her car in 3 hours. If Amy and her husband work together,
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!