2 years ago

Which fraction below represents a repeating decimal?

Mathematics

1 answer:

erastova [34]2 years ago

5 0

I believe the answer is 22/12

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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

Insert 2 sets of parentheses to make each sentence true: 2 x 14 - 9 - 17 - 14 = 7

Mandarinka [93]

It’s most definitely C

6 0

3 years ago

Classify the following triangle. check all that apply.

Leya [2.2K]

I would go for Obtuse from the 120° angle, Acute from the either the 20° and 40°, and scalene since all angles are unequal

5 0

3 years ago

Read 2 more answers

The ratio of pencils to erasers is 4:1 if there are 208 pencils,how many erasers are there?

Neko [114]

Answer:

Step-by-step explanation:

for every 4 pencils there is 1 eraser. 4/1=208/x

4x=208

x=52

7 0

3 years ago

How do you do this question?

Sveta_85 [38]

Answer:

-$0.16

Step-by-step explanation:

The expected value is the sum of the outcomes multiplied by their probabilities.

E(X) = 1/38 (+68) + 37/38 (-2)

E(X) = -0.16

5 0

3 years ago