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AlexFokin [52]
3 years ago
11

Here are the heights of 20 sunflowers, measured in centimeters: 15 25 25 25 25 5 10 10 30 70 65 105 110 55 30 35 50 45 45 a. Cal

culate the mean height of the sunflowers. Show work evidence. 5+5+ 10+15+ 25 +25+25+25180 30+35+45 +48 +56 +55+65+70+105+110. Interpret the mean height of sunflowers in context.
I got all the questions wrong :p​

Mathematics
1 answer:
Lady bird [3.3K]3 years ago
3 0

Answer:

2,301,384

Step-by-step explanation:

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a rectangle pool is 9 ft wide. the pool has an area of 117 square feet. what is the perimeter of the pool?
Softa [21]
9*13=117
(9*2)+(13*2)=44
44 feet
6 0
3 years ago
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Compute the second partial derivatives ∂2f ∂x2 , ∂2f ∂x ∂y , ∂2f ∂y ∂x , ∂2f ∂y2 for the following function. f(x, y) = 2xy (x2 +
blsea [12.9K]

Answer with step-by-step explanation:

We are given that a function

f(x,y)=2xy(x^2+y^2)^2

Differentiate partially w.r.t x

Then, we get

\frac{\delta f}{\delta x}=2y(x^2+y^2)^2+8x^2y(x^2+y^2)=(x^2+y^2)(2x^2y+2y^3+8x^2y)=2(5x^2y+y^3)(x^2+y^2)

Differentiate again w.r.t x

\frac{\delta^2f}{\delta x^2}=2(10xy)(x^2+y^2)+4x(5x^2y+y^3)=20x^3y+20xy^3+20x^3y+4xy^3=40x^3y+24xy^3

Differentiate function w.r.t y

\frac{\delta f}{\delta y}=2x(x^2+y^2)^2+2xy\times 2(x^2+y^2)\times 2y

\frac{\delta f}{\delta y}=(x^2+y^2)(2x^3+2xy^2+8xy^2)=2(x^2+y^2)(x^3+5xy^2)

Again differentiate w.r.t y

\frac{\delta^2f}{\delta x^2}=2(2y)(x^3+5xy^2)+20xy(x^2+y^2)=4x^3y+20xy^3+20x^3y+20xy^3=24x^3y+40xy^3

Differentiate partially w.r.t y

\frac{\delta^2f}{\delta y\delta x}=2(2y(5x^2y+y^3)+(x^2+y^2)(5x^2+3y^2))=10x^4+36x^2y^2+10y^4

\frac{\delta^2f}{\delta y\delta x}=10x^4+36x^2y^2+10y^4\frac{\delta^2f}{\delta x\delat y}=2(2x(x^3+5xy^2)+(3x^2+5y^2)(x^2+y^2))=10x^4+36x^2y^2+10y^4

\frac{\delta^2f}{\delta x\delat y}=10x^4+36x^2y^2+10y^4

Hence, if f(x,y) is of class C^2 (is twice continuously differentiable), then the mixed partial derivatives are equal.

i.e\frac{\delta^2f}{\delta y\delta x}=\frac{\delta^2f}{\delta x\delta y}

8 0
4 years ago
I need both 17 and 18 please
wolverine [178]

Answer:

17. 37

18. 10

Step-by-step explanation:

Use the formula a squared + b squared = c squared. (a^2 + b^2 = c^2)

For number 17 first square both your side lengths of 12 and 35 to get 144 and 1225.

Then add them together to get 1369. That is your c^2 but now you have to find the square root to get your side length of c. Once you find the square root of 1369 you should get an answer of 37 for your missing side.

Using the same formula of a^2 + b^2 = c^2 you square the two side you’re given and get 576 + b^2 = 676

Since it gives you your a and c side lengths all you do is subtract your a from your c (676 - 576) to get 100 which is your b^2. Then you find the square root of 100, which is 10 because 10 times itself is 100, you’ll have your b side length of 10

3 0
3 years ago
Please help me with this question I will give BRAINLIEST to the correct answer
anyanavicka [17]

A)   y= (-1/2)x+50

 (y=(-1/2)4 +50 = -2+50= 48)

Y=( -1/2 )8-50=-4+50 =46

B)    -1/2X+50>=40

         -1/2X>= -10

           X<=20

To start the meeting with 40 students it should be 20 minutes or less before the meeting

 Draw the line with the zero in the middle

Draw a closed circle at +20 and from that point draw a line to the left


5 0
3 years ago
Write the equivalent fraction with the given denominator.<br> with a denominator of 24
dem82 [27]

Answer:

equivalent fraction : 16/ 24

Step-by-step explanation:

24 / 3 =  8

8 * 2 =  16

16 is 2/3 of 24

3 0
3 years ago
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