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arlik [135]
2 years ago
15

You are choosing a book from your friend's book collection. You can choose 1 of 6 science fiction books, 1 of 2 mystery books, o

r 1 of 3 biographies. How many ways can you choose a book?
Mathematics
2 answers:
Fed [463]2 years ago
4 0
My solution to the problem is as follows:

Just multiply the number of each choice:

<span>6*3*2= 36 
</span>
Therefore, there are 36 ways of choosing a book.

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
xenn [34]2 years ago
4 0
Hello there.
<span>
You are choosing a book from your friend's book collection. You can choose 1 of 6 science fiction books, 1 of 2 mystery books, or 1 of 3 biographies. How many ways can you choose a book?
</span>
36 
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I don't understand this problem...<br> 1/4 x (-12)=
Nikitich [7]

Answer:

-3

Step-by-step explanation:

When multiplying a positive number with a negative number, the product will <u>always</u> be negative. First, let's solve the problem disregarding the negative sign.

  • \frac{1}{4} * 12
  • \frac{12}{4}
  • 3

Now that we know the product of 1/4 x 12 is 3, we can assume that the product of 1/4 x -12 is -3.

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2 years ago
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Please need help for question number 26
kherson [118]

(8,12)(14,3)


Use midpoint formula


(X1+x2/2, y1+y2/2)


Substitute with your points


(8+14/2, 12+3/2)


Solve each


(22/2,15/2)


Cancel common factor 2


(2×(4+7)/2(1),15/2)


Simplify

(4+7/1,15/2)


This is your midpoint

(11, 15/2)




3 0
3 years ago
A certain type of digital camera comes in either a 3-megapixel version or a 4 megapixel version. A camera store has received a s
Morgarella [4.7K]

Answer:

a) Hyper-geometric distribution

b1) P(X=2) = 0.424

b2) P(X>2) = 0.152

C1) Mean of X = 1.67

C2) Standard Deviation of X = 0.65

Step-by-step explanation:

b1) P(X = 2) = (5C2 * 7C2)/(12C4) = (10 * 21)/(495) = 210/495

P(X=2) = 0.424

b2) P(X>2) = 1 - P(X≤2) = 1 - [P(X=0) + P(X=1) + P(X=2)]

P(X=0) = (7C4)/(12C4) = 35/495 = 0.071

P(X=1) =  (5C1 * 7C3)/(12C4) = (5 * 35)/(495) = 175/495 = 0.354

P(X=2) = 0.424

P(X>2) = 1 - P(X≤2) = 1 - [0.424 + 0.071 + 0.354]

P(X>2) = 0.152

C1) Mean of X = nk/N

k = number of 3-megapixel cameras = 5

n = number of selected cameras = 4

N = Total number of cameras = 12

Mean of X = 5*4/12

Mean of X = 1.67

C2) Standard Deviation of X

Standard deviation of X=(nk/N*(1-k/N)*(N-n)/(N-1))1/2

Standard Deviation of X=(4*(5/20)*(1-5/12)*((12-4)/(12-1))^1/2 =0.65

Standard Deviation of X = 0.65

4 0
3 years ago
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