All categories

3 years ago

A company has an annual electric bill of $495,000. Of that amount, 3/5 was billed

Mathematics

1 answer:

disa [49]3 years ago

7 0

Answer:

$74,250

Step-by-step explanation:

495,000x0.6=297,000

297,000/4=74,250

You might be interested in

Suppose that you walk 10mi express the distance in yards

son4ous [18]

1 mile = 1760 yds

Therefore, if we multiply 1760 by 10 we will get 10 miles in yards

1760 * 10 = <em>17600 yards</em>

Hope it was helpful and clear.

Cheers,

8 0

3 years ago

Read 2 more answers

Write a expression that is Darryl has a board that is 8 feet long. He cuts it into pieces that are each 2 feet long. What is the

Ivahew [28]

This question is based on division of numbers and ratios.

Darryl has 8 feet of board.

It is given that,he cuts the board into pieces which are 2 feet long.

To find the number of pieces, we divide the whole length by the length of each board.

The expression which shows this is $\frac{8}{2}$

Answer = $\frac{8}{2}$

6 0

3 years ago

Let X have the uniform distribution U(0, 2) and let the conditional distribution of Y , given that X = x, be U(0, x). Find the j

Elina [12.6K]

Answer:

$f(x,y) = \frac{1}{x} \frac{1}{2}= \frac{1}{2x} , 0\leq x \leq 2 , 0\leq y \leq x$

$E(Y|x) = \int_{x=y}^2 y \frac{1}{x} dx= y ln x \Big|_{x=y}^2 =y ln 2 -y ln y = y(1-lny) \$

Step-by-step explanation:

We have two random variables X and Y. $X \sim Unif(0,2)$ and given that X=x, Y has uniform distribution (0,x)

From the definition of the uniform distribution we have the densities for each random variable given by:

$f_X (x) =\frac{1}{2} , 0\leq x\leq 2$

$f_{Y|X} (y|x) = \frac{1}{x}, 0\leq y \leq x$

And on this case we can find the joint density with the following formula:

$f(x,y) = f_{Y|X}(y|x) f_X (x)$

And multiplying the densities we got this:

$f(x,y) = \frac{1}{x} \frac{1}{2}= \frac{1}{2x} , 0\leq x \leq 2 , 0\leq y \leq x$

Now with the joint density we can find the expected value E(Y|x) with the following formula:

$E(Y|x) = \int y f_{Y|X}(y|x)dx$

And replacing we got:

$E(Y|x) = \int_{x=y}^2 y \frac{1}{x} dx= y ln x \Big|_{x=y}^2 =y ln 2 -y ln y = y(1-lny) \$

5 0

4 years ago

The product of two numbers is 48. The first number is positive, and the second number is four more than twice the first number.

Katena32 [7]

The answer is 12 and 4 because 4 times 2 is 8 and if you add that by four more that would equal 12 the same amount as the first nubmer

3 0

4 years ago

HELPPPPPPPPPPPPPPPPPPP!!!

zhuklara [117]

The answer is B) divide 124 by 275

5 0

3 years ago