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Kitty [74]
3 years ago
13

,.,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

Mathematics
1 answer:
Bingel [31]3 years ago
5 0

Answer:

what exactly is this question

Step-by-step explanation:

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If a single card is drawn from a standard 52-card deck, in how many ways can a card other than nine be obtained?
Novosadov [1.4K]

Answer:

48 ways

Step-by-step explanation:

There are 52 cards in a deck and four nines. This means that nines account for 4/52 of the deck. The opposite of 4/52 (idr the math word for that) is 48/52. Therefore, there are 48 other ways that a card other than nine can be obtained.

4 0
3 years ago
Find the inverse of 3y = 3x - 6. Write your answer in y = form with no spaces to increase the chance of auto grade working.
STALIN [3.7K]
Hope the shown work helps!

8 0
3 years ago
Read 2 more answers
Compute the matrix of partial derivatives of the following functions.
s344n2d4d5 [400]

For a vector-valued function

\mathbf f(\mathbf x)=\mathbf f(x_1,x_2,\ldots,x_n)=(f_1(x_1,x_2,\ldots,x_n),\ldots,f_m(x_1,x_2,\ldots,x_n))

the matrix of partial derivatives (a.k.a. the Jacobian) is the m\times n matrix in which the (i,j)-th entry is the derivative of f_i with respect to x_j:

D\mathbf f(\mathbf x)=\begin{bmatrix}\dfrac{\partial f_1}{\partial x_1}&\dfrac{\partial f_1}{\partial x_2}&\cdots&\dfrac{\partial f_1}{\partial x_n}\\\dfrac{\partial f_2}{\partial x_1}&\dfrac{\partial f_2}{\partial x_2}&\cdots&\dfrac{\partial f_2}{\partial x_n}\\\vdots&\vdots&\ddots&\vdots\\\dfrac{\partial f_m}{\partial x_1}&\dfrac{\partial f_m}{\partial x_2}&\cdots&\dfrac{\partial f_n}{\partial x_n}\end{bmatrix}

So we have

(a)

D f(x,y)=\begin{bmatrix}\dfrac{\partial(e^x)}{\partial x}&\dfrac{\partial(e^x)}{\partial y}\\\dfrac{\partial(\sin(xy))}{\partial x}&\dfrac{\partial(\sin(xy))}{\partial y}\end{bmatrix}=\begin{bmatrix}e^x&0\\y\cos(xy)&x\cos(xy)\end{bmatrix}

(b)

D f(x,y,z)=\begin{bmatrix}\dfrac{\partial(x-y)}{\partial x}&\dfrac{\partial(x-y)}{\partial y}&\dfrac{\partial(x-y)}{\partial z}\\\dfrac{\partial(y+z)}{\partial x}&\dfrac{\partial(y+z)}{\partial y}&\dfrac{\partial(y+z)}{\partial z}\end{bmatrix}=\begin{bmatrix}1&-1&0\\0&1&1\end{bmatrix}

(c)

Df(x,y)=\begin{bmatrix}y&x\\1&-1\\y&x\end{bmatrix}

(d)

Df(x,y,z)=\begin{bmatrix}1&0&1\\0&1&0\\1&-1&0\end{bmatrix}

5 0
4 years ago
Florian and michelle are trying to construct a triangle. florian says the side lengths could be 6, 8, and 10, and the angles of
MrRa [10]

The <em>correct answer</em> is:


Florian has the correct side lengths because the measurements fit the triangle inequality rule.


Explanation:


The triangle inequality rule states that the sum of any two sides of a triangle must be greater than the third side.


For Florian's measurements, we have:

6+8 > 10

6+10 > 8

8+10 > 6


These measurements work.


Conversely, Michelle's measurements:

7+7 = 14.


This is not greater than, so this does not work.

6 0
3 years ago
Read 2 more answers
What is the value of n when (9)^2n-1 = (27)^n+2
Elis [28]

9^{2n-1} = 27^{n+2} \\ ( {3}^{2} ) ^{2n - 1}  = ( {3}^{3} )^{  n + 2}  \\  {3}^{4n - 2}  =  {3}^{3n + 6}  \\ 4n - 2 = 3n + 6 \\ 4n - 3n = 6 + 2 \\ n = 8

Answer: n=8

5 0
3 years ago
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