|express 0.45 as a Fraction| what is the answer?

Answers

Answer 1

Answer: $0.45=(45)/(100)=(9 * 5)/(20 * 5)=\boxed{(9)/(20)}$

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-3/5(-5/9)Does anybody know how to solve negative problems like this?Help is appreciated! Thanks! :)
Write 0.292929 as a fraction
A line contains the point (8, –5). If the slope of the line is 5/7, write the equation of the line using point-slope form.
What is the slope of 4Y + 8X + 2 = 0?
I don't know what's it asking me. what should I do?

For security, a credit card number is coded in the following way, so that it can be sent as a message. Subtract each digit from 9. 1. Code the credit card number 3201 2342 3458 0931.

2. A coded credit card number is 2341 0135 7923 0133. What is the original credit card number?

3. Find f(x) if x represents a single input digit. What is the domain
of f(x)?

4. Find f-1(x). What is the domain of f-1(x)?

Answers

Answer:

1. 6798 7657 6541 9068.

2. 7658 9864 2076 9866.

3. $f(x)=9-x$ and domain of f(x) is {0,1,2,3,4,5,6,7,8,9}.

4. $f^(-1)(x)=9-x$ and domain of f⁻¹(x) is {0,1,2,3,4,5,6,7,8,9}.

We are given that,

The coding method for the card number is 'Subtract each digit from 9'.

So, we have,

Part 1: The number given is 3201 2342 3458 0931.

So, after subtracting each digit from 9, we have,

The coded number is 6798 7657 6541 9068.

Part 2: The coded number given is 2341 0135 7923 0133.

To find the original number, we will subtract the digits from 9.

The original number is 7658 9864 2076 9866.

Part 3: We have f(x), where x represents the single input digit.

That is, 'x' can have values from {0,1,2,3,4,5,6,7,8,9}.

As, the coded output is the number subtracted from 9.

We get, the function is $f(x)=9-x$ .

So, the domain of f(x) is {0,1,2,3,4,5,6,7,8,9}.

Part 4: We need to find the inverse function.

So, we have, $f(x)=9-x$ i.e. $x=9-f(x)$ .

Thus, the inverse function is $f^(-1)(x)=9-x$

Since, the range of f(x) is the domain of f⁻¹(x).

The domain of f⁻¹(x) is {0,1,2,3,4,5,6,7,8,9}.

Give in, interval notation, the unknown numbers in the following description. When 4 is added to twice a number, the result is greater than it equal to 18.

Answers

The answer is 8 hope this helps all u have to do is figure out what two numbers added togher give you 18

Which of the following sentences is written correctly?Each of the member have one votes.
Each of the members have one vote.
Each of the members having one vote.
Each of the members has one vote.

Answers

B. EACH OF THE MEMBERS HAVE ONE VOTE
HOPE THIS HELPED ;)

each of the members have one vote. the subject-verb agreement in the other sentences is not right.

Name two quadrilaterals in which all the sides have an equal length

Answers

Square, Rhombus.

Their sides are equal! :D

simple the square and the rhombus are two quadrilaterals in which all the sides have an equal length

Need help with all And have to show work

Answers

Altho' I can easily guess what you're supposed to do here, I must point out that you haven't included the instructions for this problem.

I'll help you by example. Let's look at the first problem:

"Evaluate 6(z-1) at z-4."

Due to "order of operations" rules, we must do the work inside the parentheses FIRST. Replace the z inside (z-1) with "-4". We obtain

6(-4-1) = 6(-5) = -30 (answer.)

Your turn. Try the next one. If it's unclear, as questions.

Val rented a bicycle while she was on vacation. She paid a flat rental fee of $55, plus $8.50 each day. The total cost was $123. write an equation and solve for the number of days she rented the bicycle.

Answers

8.50x + 55 = 123
8.5x = 68
x = 8
She rented the bicycle for 8 days

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