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3 years ago

Do number two for points and brainliest

Mathematics

1 answer:

erastovalidia [21]3 years ago

3 0

You should use 12$ per because your overall profit was higher. Lower cost means less profit but higher number of buyers

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20 points! PLease help. A square room in Amber's home has an area of 128 square feet. Which is the best estimate of one side len

topjm [15]

Well if the room is square then you ned to find the square root of the area.

Find $\sqrt{128}$

6 0

3 years ago

Thanks to whoever helped me out last time but I have another question.

yulyashka [42]

Answer:

Step-by-step explanation:

8 0

3 years ago

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A plane flying horizontally at an altitude of 1 mile and a speed of 510 mi/h passes directly over a radar station. Find the rate

sdas [7]

Answer:

442 miles

Step-by-step explanation:

Given

To properly solve this question, I illustrate some given parameters using attached image

From the image, apply Pythagoras theorem

$x^2 + 1^2 = y^2$

Differentiate w.r.t time (t)

$2x\frac{dx}{dt} + 0 = 2y\frac{dy}{dt}$

$2x\frac{dx}{dt} = 2y\frac{dy}{dt}$

Divide both sides by 2

$x\frac{dx}{dt} = y\frac{dy}{dt}$

From the question, we have that the plan travels are 510mi/h.

This implies that:

$\frac{dx}{dt} = 510mi/h$

So, we then calculate the value of x when the distance (y) is 2mi i.e.:

$y = 2mi$

Apply Pythagoras theorem

$x^2 + 1^2 = y^2$

$x^2 + 1^2 = 2^2$

$x^2 + 1 = 4$

$x^2 = 4-1$

$x^2 = 3$

$x = \sqrt 3$

So, the expression becomes:

$x\frac{dx}{dt} = y\frac{dy}{dt}$

$\sqrt 3 * 510 = 2* \frac{dy}{dt}$

$\frac{\sqrt 3 * 510}{2} = \frac{dy}{dt}$

$\sqrt 3 * 255 = \frac{dy}{dt}$

$\frac{dy}{dt} = 255\sqrt 3$

$\frac{dy}{dt} = 255 * 1.7321$

$\frac{dy}{dt} = 441.655$

$\frac{dy}{dt} = 442$

<em>Hence, the distance is 442 miles</em>

7 0

3 years ago

Its math- easy math im just dumb

Schach [20]

Answer:

x y

1 15

2 30

3 45

4 60

5 75

Step-by-step explanation:

Hope this works!

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3 years ago

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Solve for a: g=ca <br><br> Urgent help please

777dan777 [17]

Answer:g/c

Step-by-step explanation:

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3 years ago

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