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torisob [31]
3 years ago
14

Can someone please help me with these!!!!!

Mathematics
1 answer:
Alona [7]3 years ago
3 0
Yes, No, Yes, Yes, No. You fill in (x,y) numbers into the equations and if it cancels out into 4, it would be 4=4. If it doesn’t become 4=4, it’s no.
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Write the point-slope form of an equation for a horizontal line that passes through (-15, 11).
cestrela7 [59]
I think the answer is y-11=0.

I am confused because there is no slope given so what I did is I just replaced y with its vakue that was given and determoned as to what equation is true. 

So, 
y-11=0
11-11=0
3 0
4 years ago
ol McDonald would like to build a pin for his favorite pig horse and cow he needs to enclose a rectangular plot of land into thr
garri49 [273]

The area of the pen is the products of its dimensions

  • The dimension of the pen is 300 by 120 feet
  • The maximum area of the pen is 36000 square feet.

Let the dimension of the fence be x by y.

So, we have:

<em />\mathbf{2x + 5y = 1200}<em> --- perimeter</em>

<em />\mathbf{Area =xy}<em> -- area</em>

<em />

Subtract 5y from both sides of \mathbf{2x + 5y = 1200}

\mathbf{2x = 1200 - 5y}

Divide both sides by 2

\mathbf{x = \frac{1200 - 5y}{2}}

Substitute \mathbf{x = \frac{1200 - 5y}{2}} in \mathbf{Area =xy}

\mathbf{Area = \frac{1200 - 5y}{2} \times y}

\mathbf{Area = \frac{1200y - 5y^2}{2}}

Split

\mathbf{Area = 600y - \frac{5}{2}y^2}

Differentiate

\mathbf{A' = 600 -5y}

Set to 0

\mathbf{600 -5y = 0}

Add 5y to both sides

\mathbf{5y = 600}

Divide both sides by 5

\mathbf{y = 120}

Substitute \mathbf{y = 120} in \mathbf{x = \frac{1200 - 5y}{2}}

\mathbf{x = \frac{1200 - 5 \times 120}{2}}

\mathbf{x = \frac{1200 - 600}{2}}

\mathbf{x = \frac{600}{2}}

\mathbf{x = 300}

Recall that:

\mathbf{Area =xy}

So, we have:

\mathbf{Area = 300 \times 120}

\mathbf{Area = 36000}

Hence, the maximum area of the pen is 36000 square feet.

Read more about maximum areas at:

brainly.com/question/11906003

7 0
3 years ago
Write the equation:
ivanzaharov [21]
How much is more is Jerry’s salary than Victoria’s salary after 3 years?

It’s a pretty simple question
8 0
3 years ago
4) The yellow submarine was at sea level when the passengers boarded. The journey began with a descent of 40 meters. After exami
____ [38]

a) Write an expression to describe the journey of the yellow submarine.

-> ((0 - 40) + 30) - 25

[] Sea level = 0

[] The descend 40 meters = -40

[] After examining the sea, they rose 30 meters = + 30

[] They dove 25 meters to look at an octopus = -25

b) At what depth did they stop to look at the octopus?

-> -35 meters

[] The started at 0 (0), descended 40 (-40), rose 30 (-10), and then sove 25 (-35) to see the octopus

[] Another way to think of this is to simplify our previous expression completely

Have a nice day!

     I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)

- Heather

4 0
3 years ago
What is the domain and range for y=sqrt(x-4) ...?
son4ous [18]
Have in mind that as you cannot take the square root of a negative number, this means that x-4 CANNOT be negative. So it's either 0 or it's positive. So we proceed like this:<span>x−4≥0</span> <span>x−4+4≥0+4</span> <span>x≥4
</span>So the domain is <span>{<span>x|x≥4</span>}
</span>In interval notation, the domain is <span><span>[4,∞)
I hope thi can help you</span></span>
7 0
3 years ago
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