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3 years ago

9

a pen is randomly picked from a box that contains 12 red pen,13 blue pen and 5 black pen. calculate the probability of getting a

black pen.

1 answer:

Firdavs [7]3 years ago

3 0

12 plus 13 plus 5 is 30
5 divided by 30 is .16666667
Move the decimal get 16%

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14 in

Step-by-step explanation:

4+12+4+4+4=28/2= 14

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3 years ago

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almond37 [142]

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3 years ago

A. $20,950.75<br><br> B.$28,458.50<br><br> C.$31,045.50<br><br> D.$34,650.75

quester [9]

Answer:

C) 31,045.50

Step-by-step explanation:

<em>p*</em>855= amount of money made from sold products

You must subtract the amount of money spent from the amount of money made from sold products.

213750-6780=206970

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2 years ago

What is the constant in the following equation? 12 = 3k

stiks02 [169]

Answer:

k = 4

Step-by-step explanation:

$12=3k\\\frac{12}{3}=\frac{3k}{3} \\4=k$

5 0

3 years ago

I will mark you brainliest if you provide evidence you know what your doing

topjm [15]

Option C

<u>SOLUTION:</u>

We need to find the value of B - CF

First find the value CF:

$CF=\left[\begin{array}{ccc}12&0&1.5\\1&-6&7\\\end{array}\right] \left[\begin{array}{ccc}-2&0\\0&8\\2&1\end{array}\right]$

$CF=\left[\begin{array}{ccc}12(-2)+0 *0+1.5*2&12*0+0.8+1.5*1\\1*(-2)+(-6)*0+7.2&1*0+(-6)*8+7.1\\\end{array}\right]$

$CF=\left[\begin{array}{ccc}-21&1.5\\12&-41\\\end{array}\right]$

Now find value of B - CF:

$B-CF=\left[\begin{array}{ccc}2&8\\6&3\\\end{array}\right] -\left[\begin{array}{ccc}-21&1.5\\12&-41\\\end{array}\right]$

$B-CF=\left[\begin{array}{ccc}23&6.5\\-6&44\\\end{array}\right]$

∴ the value of B - CF is $\left[\begin{array}{ccc}23&6.5\\-6&44\\\end{array}\right]$

<em>I hope this helps....</em>

8 0

3 years ago