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3 years ago

Plz help! Question is below!

Mathematics

1 answer:

Fynjy0 [20]3 years ago

6 0

Answer:

Step-by-step explanation:

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me vazquez determines that the area of a bathroom in his house is 25 square feet less than 1/5 of the area of the living room. i

Elanso [62]

Answer:

Area of Living Room = 300 square feet

Step-by-step explanation:

According to question ,

The area of bathroom = 35 square feet

And it is mention that area of bathroom is 25 sqft less than $\frac{1}{5}$ area of living room .

Thus , as per question ,

Area of bathroom = $\frac{1}{5}$ times area of living room - 25 sqft

Or, 35 sqft = $\frac{1}{5}$ times area of living room - 25 sqft

Or, 35 sqft + 25sqft = $\frac{1}{5}$ times area of living room

Or, 60 sqft = $\frac{1}{5}$ times area of living room

∴ Area of living room = 60 × 5

Hence , Area of living room = 300 square feet .

5 0

3 years ago

How is 9.746 x 1013 written in standard form?

sammy [17]

Answer:

9872.698 is 9.746 x 1013 in standard form

4 0

4 years ago

The failure of a circuit board interrupts work that utilizes a computing system until a new board is delivered. The delivery tim

Hatshy [7]

Answer:

The expected cost is 152

Step-by-step explanation:

Recall that since Y is uniformly distributed over the interval [1,5] we have the following probability density function for Y

$f_Y(y ) = \frac{1}{5-1} = \frac{1}{4}$ if $1\leq y \leq 5$ and 0 othewise. (To check this is the pdf, check the definition of an uniform random variable)

Recall that, by definition

$E(Y^k) = \int_{-\infty}^{\infty} y^kf_Y(y)dy$

Also, we are given that $C = 50+3Y+9Y^2$ . Recall the following properties of the expected value. If X,Y are random variables, then

$E(a+bX+cY) = a+bE(X)+cE(Y)$

Then, using this property we have that $E[C] = 50+3E[Y]+ 9E[Y^2]$ .

Thus, we must calculate E[Y] and E[Y^2].

Using the definition, we get that

$E[Y] = \int_{1}^{5}\frac{y}{4} dy =\frac{1}{4}\left\frac{y^2}{2}\right|_{1}^{5} = \frac{25}{8}-\frac{1}{8} = 3$

$E[Y^2] = \int_{1}^{5}\frac{y^2}{4} dy =\frac{1}{4}\left\frac{y^3}{3}\right|_{1}^{5} = \frac{125}{12}-\frac{1}{12} = \frac{31}{3}$

Then

$E(C) = 50 + 3\cdot 3 + 9 \cdot \frac{31}{3} = 152$

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3 years ago

What is half of 7 3/4 (please and thank you)

andrew11 [14]

3 7/8 or 3.875, ldjgkfkd

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3 years ago

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What is the y intercept of this quadratic? (Picture)

gayaneshka [121]

Answer:

We know that the y intercept is -3 because that is where it intersects! The point for the y intercept is (0, -3)

Step-by-step explanation:

8 0

2 years ago

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