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svlad2 [7]
3 years ago
9

Please help me with this question check the attachments

Mathematics
1 answer:
soldi70 [24.7K]3 years ago
8 0

a) \: 17 - 3 \frac{1}{5}

17-\frac{3\times 5+1}{5}

LCM=5

17-\frac{16}{5}

17\times \frac{5}{5}-\frac{16}{5}

\frac{85}{5}-\frac{16}{5}

\frac{69}{5}

13 \frac{4}{5}

b) \: 2\frac{1}{5}+4\frac{1}{4}+\frac{7}{10}

6+\frac{1}{5}+\frac{1}{4}+\frac{7}{10}

LCM=20

6+\frac{4}{20}+\frac{5}{20}+\frac{14}{20}

6+\frac{4}{20}+\frac{5}{20}+\frac{14}{20}

6+\frac{23}{20}

6+1\frac{3}{20}

7\frac{3}{20}

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F(x) = 2x + 1

To find the inverse of a function you just need to switch the x by y or vice-versa:

-> y = 2x + 1
-> x = 2y + 1

After that you isolate the y again:

-> 2y = x - 1

-> y = (x-1)/2
-> f^-1 (x) = (x-1)/2

Answer:
f^{ - 1} (x) = (x - 1) \div 2
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Step-by-step explanation:

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A plumber had a pipe that was 2 yards long he cut 18 inches off the end of the pipe
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Can someone help me with these 3 questions. Sorry for the annoyance.
erastova [34]

Answer:

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Step-by-step explanation:

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Let D = {-48, -14, -8, 0, 1, 3, 16, 23, 26, 32, 36} Determine which of the following statements are true and which are false. a)
morpeh [17]

Answer:

\forall x\in D if x is odd then x> 0 is true statement.

\forall x\in D if x is odd then x> 0 is true statement.

\forall x\in D if x is even then x≤0 is false statement.

\forall x\in D If the ones digit of x is 2, then the tens digit is 3 or 4 is true statement.

\forall x\in D if the ones digit of x is 6, then the tens digit is 1 or 2 is false statement.

Step-by-step explanation:

Consider the provided information.

D = {-48, -14, -8, 0, 1, 3, 16, 23, 26, 32, 36}

Part (A) \forall x\in D if x is odd then x> 0

Here only even numbers are less than 0 that means the statement is true.

\forall x\in D if x is odd then x> 0 is true statement.

Part (B) \forall x\in D if x is less than 0 then x is even.

Here only even numbers are less than 0 that means the statement is true.

\forall x\in D if x is odd then x> 0 is true statement.

Part (C) \forall x\in D if x is even then x≤0

Here we can see that 16, 26, 32, 36 are even number and also greater than 0. Thus the statement is false.

\forall x\in D if x is even then x≤0 is false statement.

Part (D) \forall x\in D If the ones digit of x is 2, then the tens digit is 3 or 4.

There is only one number whose ones digit is 2. i.e. 32 also the tens digit of the number 32 is 3. Which makes the above statement true.

\forall x\in D If the ones digit of x is 2, then the tens digit is 3 or 4 is true statement.

Part (E) \forall x\in D if the ones digit of x is 6, then the tens digit is 1 or 2.

Numbers having ones digit 6 are: 16, 26 and 36

Here, the tens digits are 1, 2 and 3 which is contradict to our statement. Hence the provided statement is false.

\forall x\in D if the ones digit of x is 6, then the tens digit is 1 or 2 is false statement.

8 0
3 years ago
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