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FrozenT [24]
3 years ago
11

PLS ANSWER QUICKLY

Mathematics
2 answers:
Ne4ueva [31]3 years ago
7 0

Answer:

Answer Choice B

Step-by-step explanation:

63/256

nignag [31]3 years ago
5 0
Your question is related to the binomial probability

Although there is no picture, I will answer your question that is:

Find the probability of getting exactly 5 “heads” in 10 coin flips
Probability of getting a head = 1/5 and also 1/2 for getting a tail.
P(H) =1/2 and P(T) =1/2
Total # of flips =10;  Total # Heads requested = 5

¹⁰C₅ = (PH)⁵.P(T)¹⁰⁻⁵

¹⁰C₅ = (1/2)⁵.P(1/2)⁵ = 63/256  (answer B)

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The ratio of red marbles to blue marbles in a bag is 3:4 . If there are 42 marbles in the bag. how many marbles are red?
PolarNik [594]

Answer:

18 marbles

Step-by-step explanation:

Step 1

Express the fraction of each type of marble as a function of the total number of marbles as shown;

Let;

total marbles=x

red marbles=3/(3+4)=3/7x

blue marbles=4/7 x

But x=42 marbles

The total number of marbles for each type can be expressed as;

total number of red marbles=fraction of red marbles×total number of marbles

where;

fraction of red marbles=3/7 x

total number of marbles=42

replacing;

total number of red marbles=(3/7)×42=18 marbles

total number of blue marbles=fraction of blue marbles×total number of marbles

where;

fraction of blue marbles=4/7 x

total number of marbles=42

replacing;

total number of blue marbles=(4/7)×42=24 marbles

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How can you use similar triangles to find a missing measurement?
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