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3 years ago

A square scarf has a side length of 3/4 yard on each side what is the area of the scarf??

Mathematics

1 answer:

kondor19780726 [428]3 years ago

6 0

Answer:

3 unit

Step-by-step explanation:

3/4 x 4 = 12/4 = 3

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A fair coin is flipped twelve times. What is the probability of the coin landing tails up exactly nine times?

seraphim [82]

Answer:

$P\left(E\right)=\frac{55}{1024}$

Step-by-step explanation:

Given that a fair coin is flipped twelve times.

It means the number of possible sequences of heads and tails would be:

2¹² = 4096

We can determine the number of ways that such a sequence could contain exactly 9 tails is the number of ways of choosing 9 out of 12, using the formula

$nCr=\frac{n!}{r!\left(n-r\right)!}$

Plug in n = 12 and r = 9

$=\frac{12!}{9!\left(12-9\right)!}$

$=\frac{12!}{9!\cdot \:3!}$

$=\frac{12\cdot \:11\cdot \:10}{3!}$ ∵ $\frac{12!}{9!}=12\cdot \:11\cdot \:10$

$=\frac{1320}{6}$ ∵ $3!\:=\:3\times 2\times 1=6$

$=220$

Thus, the probability will be:

$P\left(E\right)=\frac{n\left(E\right)}{n\left(S\right)}$

$=\frac{220}{4096}$

$=\frac{55}{1024}$

Thus, the probability of the coin landing tails up exactly nine times will be:

$P\left(E\right)=\frac{55}{1024}$

4 0

3 years ago

A bag contains 40 marbles there are 26 blue five Green five red to yellow and two black marbles without looking Layla reaches in

DENIUS [597]

10 is the answer.

I think

3 0

3 years ago

Can anyone help with this?

Len [333]

Answer:

226.2‬

Step-by-step explanation:

32.5+42.9=75.4

75.4*3=226.2‬

226.2 is the answer.

5 0

3 years ago

126/21 The simplest form

Marina CMI [18]

$\dfrac{126}{21} = \dfrac{2 \times 3 \times 3 \times 7}{3 \times 7} = 6$

Answer: 6

8 0

2 years ago

317,362 x 129,324<br> Is it even or odd

Anna35 [415]

Answer:

41,042,523,288 It is even.

Step-by-step explanation:

To tell whether a number is even or odd, look at the number in the ones place. That single number will tell you whether the entire number is odd or even. An even number ends in 0, 2, 4, 6, or 8. An odd number ends in 1, 3, 5, 7, or 9.

5 0

2 years ago