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Oksana_A [137]
3 years ago
8

Carissa recently used her cell phone to transfer money from her savings account to her checking account. This is considered to b

e what type of electronic banking service? A. Financial service B. Customer service C. Transactional service D. Nontransactional service
Mathematics
1 answer:
Leya [2.2K]3 years ago
4 0
The answer is C. transactional service 
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Help answer all please wrong answers will get reported
Maurinko [17]

If f^{-1}(x) is the inverse of f(x), then by definition of inverse functions,

\left(f\circ f^{-1}\right)(x) = f\left(f^{-1}(x)\right) = x

Given f(x) = 2x-8, the inverse, if its exists, satisfies the equation above. Evaluate f at the inverse, we have

f\left(f^{-1}(x)\right) = 2 f^{-1}(x) - 8 = x

Solve for the inverse:

2 f^{-1}(x) - 8 = x

2 f^{-1}(x) = x + 8

\boxed{f^{-1}(x) = \dfrac12 x + 4}

Given g(x) = \frac13 x + 5, we do the same thing as before to find its inverse.

g\left(g^{-1}(x)\right) = \dfrac13 g^{-1}(x) + 5 = x \implies \boxed{g^{-1}(x) = 3x - 15}

5 0
2 years ago
What is -5x + 3y= 12 in slope intercept form?
babymother [125]

Answer:

y = (5/3)x + 4

Step-by-step explanation:

-5x + 3y = 12 (What you start with)

3y = 12 + 5x (Adding 5x to both sides)

y = (5/3)x + 4 (Dividing the equation by 3)

8 0
3 years ago
Pleeaaaaassssssseeeee help for brainlist and 100 points
emmainna [20.7K]

Answer:

Part A: C, Part B: A, E, i, K  160 cm, A: 21, Use PEMDAS and you get 13 5/7.

Step-by-step explanation:

1.6 x 100 meters = 160 centimeters

3 x 7/1 = 21/1 = 21

3 0
3 years ago
Read 2 more answers
Find the area of a square with sides 17 centimeters long.
pickupchik [31]

Answer:

289 cm²

Step-by-step explanation:

Length (L) = 17 cm

Area of a square

= L²

= (17cm)²

= 289 cm²

7 0
2 years ago
Read 2 more answers
The labor force participation rate is the number of people in the labor force divided by the number of people in the country who
zepelin [54]

Answer:

The expected participation rate is 0.637.

The standard error is 0.04397

Step-by-step explanation:

For each working age people asked, there are only two possible outcomes. Either they are in the labor force, or they are not. This means that we can solve this problem using binomial distribution probability concepts.

Binomial probability:

Expected value for the participation rate: The expected value is the probability of a success. In this problem, a success is a working age people being in the labor force. 63.7% of them are. So \pi = 0.637. This means that the expected participation rate is 0.637.

Standard error for the participation rate:

The standard error is given by the following formula:

\sigma = \sqrt{\frac{\pi(1-\pi)}{n}}.

In this problem, 120 people are asked, so \pi = 120

s = \sqrt{n\pi(1-\pi)} = \sqrt{\frac{0.637*(1-0.637)}{120}} = 0.04397.

So the standard error is 0.04397

8 0
3 years ago
Read 2 more answers
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