3 years ago

Please help mee to figure out who is right

Mathematics

1 answer:

lina2011 [118]3 years ago

7 0

Let me see if I am correct I will get back to u

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Evaluate the expression when y=3<br>y²-7y-4

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Answer:

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Step-by-step explanation:

3^2-7(3)-4

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3 years ago

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Translate: "The product of 8 and a number, b, is taken away from 24"

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2 years ago

What is the probability that the number of “HEADs” on these four coins is equal to 3? (4 points)

slavikrds [6]

Answer:

a. $\frac{1}{4}$

Step-by-step explanation:

We are asked to find the probability of getting 3 heads on 4 flips.

$\text{Probability}=\frac{\text{Number of favorable outcomes}}{\text{Total number of possible outcomes}}$

Since we know that flipping a fair coin has 2 equally likely possible outcomes, so flipping four coins will have $2*2*2*2=16$ possible outcomes.

Sample space of possible outcomes.

HHHH, HHHT, HHTH, HHTT, HTHH, HTHT, HTTH, HTTT,

THHH, THHT, THTH,THTT, TTHH, TTHT, TTTH, TTTT.

We can see that there are 4 favorable outcomes of getting heads.

$\text{Probability of getting 3 heads}=\frac{4}{16}$

$\text{Probability of getting 3 heads}=\frac{1}{4}$

Therefore, the probability of getting 3 heads on 4 coins will be $\frac{1}{4}$ and option a is the correct choice.

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3 years ago

Select three common forms of Anglo-Saxon literature. lyric novella riddle epic elegy ballad novel short story

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3 years ago

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