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Stella [2.4K]
3 years ago
12

H e l p (15 points :)

Mathematics
1 answer:
marishachu [46]3 years ago
3 0

Answer:those are your classes and the last one is the classes you completed i think im not really sure tho but yeah, umm byeee

Step-by-step explanation:

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Find the dimensions of a rectangle (in m) with area 1,728 m2 whose perimeter is as small as possible. (Enter the dimensions as a
lozanna [386]

Given :

Area of rectangle.

To Find :

The dimensions of a rectangle (in m) with area 1,728 m2 whose perimeter is as small as possible.

Solution :

Let, the dimensions of rectangle is x and y.

Area, A = xy.

x = A/y.              ....1)

Perimeter, P = 2( x + y )

Putting value of x in above equation, we get :

P = 2( y + \dfrac{A}{y})

For minimum P,

\dfrac{dP}{dx}=2( 1 - \dfrac{A}{x^2})=0\\\\A = x^2

SO, it is a square.

x=\sqrt{A}\\\\x=\sqrt{1728\ m^2}\\\\x=24\sqrt{3}\ m

Therefore, the dimensions are (24\sqrt{3},24\sqrt{3}).24\sqrt{3}

Hence, this is the required solution.

7 0
3 years ago
What equation defines a line that intersects the graph of 6x-2y=10 exactly once?
leva [86]

Any line with a slope different than 3 will intercept the given line only once.

<h3>What equation defines a line that intersects the graph?</h3>

The answer will be any line that is not parallel (nor the same) to the given line.

Remember two lines are parallel if the lines have the same slope and different y-intercept

In this case, the given linear equation is:

6x - 2y = 10

y = 3x - 5

So the slope is 3 and the y-intercept is -5.

Then, any line with a slope different than 3 will intercept this line only once.

An example can be:

y = 314*x

If you want to learn more about linear equations:

brainly.com/question/4025726

#SPJ1

6 0
2 years ago
Consider the line y= 4-4x slope of a parallel line Slope of a perpendicular
Arlecino [84]

Answer:

parallel : y = -4x + 4

perpendicular : y = 1/4x + 4

Step-by-step explanation:

y= 4-4x is

y = -4x + 4 (rewritten)

parallel line will have the same slope

so

y = -4x + 4

perpendicular is a negative reciprocal

so

-4x become 1/4x

so

y = 1/4x + 4

3 0
3 years ago
in sunlight, a vertical stick 9 ft tall casts a shadow 7 ft long. at the same time a nearby tree casts a shadow 28ft long. how t
attashe74 [19]
The tree wood b 36 ft
because:
<u>28'</u>
7' = 4'
9'x4'= 36'
that 36' is the trees height.
6 0
3 years ago
-3 + 4x =5<br> What is the answer
Agata [3.3K]

Answer:

ay pala próxima amigo no me la sé

6 0
3 years ago
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