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3 years ago

(d) Chris chooses a card at random, replaces it, then chooses a

Mathematics

1 answer:

Hatshy [7]3 years ago

6 0

Answer:

Step-by-step explanation:

I'm assuming you have 26 cards each with a different letter on it.

(d) Prob(Not M, Not M , M)

= 25/26 * 25*26 * 1/26

= 625/17576

or 0.036 to nearest thousand

(e) Prob(Not M, Not M, M) without replacement

= 25/26*24/25*/1/24

= 1/26

or 0.038 to nearest thousandth.

2(a)

1/6.

(b)

5/6 * 1/6

= 5/36.

(c)

5/6 * 5/6

= 25/36

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On the number line what is fraction is between 1/2 and 5/6

Artist 52 [7]

Answer:

2/3

Step-by-step explanation:

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3 years ago

Given the following matrices, what 3 elements make up the first column of the product matrix DA?

Misha Larkins [42]

We have to figure out what the product of DA is,

$\begin{bmatrix}-1&2&3\\8&-4&0\\6&7&1\\ \end{bmatrix}\begin{bmatrix}1\\3\\5\\ \end{bmatrix}=\begin{bmatrix}a\\b\\c\\ \end{bmatrix}$

We know that,

$\begin{bmatrix}a&b&c\\d&e&f\\g&h&i\\\end{bmatrix}\begin{bmatrix}x\\y\\z\\\end{bmatrix}=\begin{bmatrix}ax+by+cz\\dx+ey+fz\\gx+hy+iz\\\end{bmatrix}$

So,

$a=-1\cdot1+2\cdot3+3\cdot5=-1+6+15=20$

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$c=6\cdot1+7\cdot3+1\cdot5=6+21+5=32$

So the solution is,

$a,b,c=\boxed{20,-4,32}$

Hope this helps :)

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3 years ago

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Dmitry [639]

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3 years ago

What is the product of any number, x, multiplied by 1? explain how you know

gulaghasi [49]

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3 years ago

Read 2 more answers

What is the simplified expression for 3 y squared minus 6 y z minus 7 + 4 y squared minus 4 y z + 2 minus y squared z? y squared

tresset_1 [31]

Answer:

7y^2 - y^2z - 10yz-5

C. 7 y squared minus y squared z minus 10 y z minus 5

Step-by-step explanation:

A. y squared minus y squared z minus 10 y z minus 5

B. y squared minus y squared z minus 5 y z minus 5

C. 7 y squared minus y squared z minus 10 y z minus 5

D. 7 y squared minus y squared z minus 2 y z minus 5

Given:

3y^2 - 6yz - 7 + 4y^2 - 4yz + 2 - y^2z

Collect like terms in the expression

3y^2 + 4y^2 - 6yz - 4yz - y^2z - 7 + 2

Simplify

7y^2 - 10yz - y^2z - 5

Rewritten as

7y^2 - y^2z - 10yz-5

Option C. 7 y squared minus y squared z minus 10 y z minus 5

Is the answer

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4 years ago