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3 years ago

A circular rug has a circumference of 18.84 feet. What is the area of the rug?

Mathematics

1 answer:

bija089 [108]3 years ago

5 0

Step-by-step explanation:

18.84/2= 9.42/3.14 = 3 times 3 = 9 times 3.14 = 28.26

answer is 28.26

sorry if i get it wrong this is how i remember finding it. Im very sure this is how it is

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Solve and Graph: 12 – ⅔ x > 6

slega [8]

Answer:

There's the graph

But the answer is x<9

X is all values below 9.

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3 years ago

Expand and simplify (y-3)³

Tanya [424]

Answer:

Expanded: (y-3)(y-3)(y-3)

Simplified: $y^{3}-9y^{2}+27y-27$

Step-by-step explanation:

Expanded: (y-3)(y-3)(y-3)

Simplified:

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3 years ago

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WARRIOR [948]

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3 years ago

If Karri takes a 7 question true false test and guess on every question, what is the

dusya [7]

Answer:

The probability that she gets all 7 questions correct is 0.0078.

Step-by-step explanation:

We are given that Karri takes a 7 question true-false test and guess on every question.

The above situation can be represented through binomial distribution;

$P(X = r) = \binom{n}{r} \times p^{r} \times (1-p)^{n-r} ; x = 0,1,2,3,........$

where, n = number of samples (trials) taken = 7 question

r = number of success = all 7 questions correct

p = probability of success which in our question is probability that

question is correct, i.e. p = 50%

Let X = Number of question that are correct

So, X ~ Binom(n = 7, p = 0.50)

Now, the probability that she gets all 7 questions correct is given by = P(X = 7)

P(X = 7) = $\binom{7}{7} \times 0.50^{7} \times (1-0.50)^{7-7}$

= $1 \times 0.50^{7} \times 0.50^{0}$

= 0.0078

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3 years ago

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777dan777 [17]

Answer:

Step-by-step explanation:

hope this helps ;)

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2 years ago