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3 years ago

What is the function graph if both the domain and range is (−∞, ∞)

Mathematics

1 answer:

velikii [3]3 years ago

7 0

Answer:

(−∞, ∞) and (−∞, ∞)

Step-by-step explanation:

One example (of many) might be y = 2x. The domain and range of this function are (−∞, ∞) and (−∞, ∞).

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How do you find the probability of two events A and B when A and B are independent? dependent?

Ludmilka [50]

Answer:

I think it is A, but i am not sure, sorry

Step-by-step explanation:

Two events are independent if the result of the second event is not affected by the result of the first event. If A and B are independent events, the probability of both events occurring is the product of the probabilities of the individual events.

A. For independent events, find the probability of the first event, find the probability of the second event after the first event occurs, and then multiply. For dependent events, find the probability of the first event, find the probability of the second event, and then multiply.

7 0

3 years ago

Read 2 more answers

Tony misplaced 7 77 stamps from his collection. He knows that each stamp of his is worth $ 0 . 1 5 $0.15dollar sign, 0, point, 1

denis23 [38]

I take it that only 7 stamps are misplaced and that we are asked for the total value of the stamps including those which have been misplaced.
If each is worth $0.15 then, the total worth of 7 stamps is $1.05. Then, we add this value to the value of his remaining stamps, $5.55, the answer would be $6.60.

7 0

4 years ago

What is vaule of y when x=4'5

Degger [83]

Answer:

$y = 2.096$ or $y = \frac{2\sqrt5+6}{5}}$

Step-by-step explanation:

Given

$y = \frac{4}{x} + \sqrt x + 0.2 - 5x$

$x = \frac{4}{5}$

Required

Find y

$y = \frac{4}{x} + \sqrt x + 0.2 - 5x$

Substitute $x = \frac{4}{5}$

$y = \frac{4}{4/5} + \sqrt{4/5} + 0.2 - 5 * 4/5$

$y = 5 + \sqrt{4/5} + 0.2 - 4$

Collect like terms

$y = \sqrt{4/5} + 5 + 0.2 - 4$

$y = \sqrt{\frac{4}{5}} + 1.2$

Split the surd

$y = \frac{\sqrt4}{\sqrt5}} + 1.2$

$y = \frac{2}{\sqrt5}} + 1.2$

Rationalize

$y = \frac{2\sqrt5}{\sqrt5*\sqrt5}} + 1.2$

$y = \frac{2\sqrt5}{5}} + 1.2$

Take LCM and add

$y = \frac{2\sqrt5+1.2*5}{5}}$

$y = \frac{2\sqrt5+6}{5}}$

or solve as:

$y = \frac{2*2.24+6}{5}}$

$y = \frac{10.48}{5}$

$y = 2.096$

7 0

3 years ago

4y−7+2y=3(y−1)−1 answer for y

sammy [17]

The answer to your question is y=1

3 0

3 years ago

Read 2 more answers

The Hayes family and the Rodrigues family use their sprinklers last summer. The water output rate for the Hayes family sprinkler

Elis [28]

Answer:

Hayes family: 35 hours
Rodrigues family: 40 hours

Step-by-step explanation:

Let x and y represent the usage hours by the Hayes and Rodrigues families, respectively. The problem statement gives us relations that can be used to write equations for volume of use and for total hours.

15x +30y = 1725 . . . . . total liters of use

x + y = 75 . . . . . . . . . total hours of use

The second equation lets us write an expression for y:

y = 75 -x

This can be substituted into the first equation to give ...

15x +30(75 -x) = 1725

-15x + 2250 = 1725 . . . . . . simplify

-15x = -525 . . . . . . . . . . . subtract 2250

x = 35 . . . . . . . . . . . . . . divide by -15

y = 75 -35 = 40

The Hayes family used their sprinklers for 35 hours; the Rodrigues family used theirs for 40 hours.

3 0

3 years ago