Help im not sure if i am doign this right or not

Mathematics

1 answer:

ExtremeBDS [4]3 years ago

3 0

Answer:

(a) <em>X</em> = {Bilk, Jas, Piaf, Sydow, Wil}

(b) <em>Y</em> = {Jas, Sydow, Tixo}

Hope that helps.

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YOU HAVE 8 COINS IN A BAG. 3 OF THEM ARE UNFAIR AND THEY HAVE 60% CHANCE OF COMING UP WITH HEAD WHEN FLIPPED. YOU RANDOMLY CHOSE

madreJ [45]

Answer:

0.29125 or 29.125%

Step-by-step explanation:

For the five fair coins, the probability of coming up head when flipped is 0.5, so for two flips: 0.5*0.5 = 0.25, for each of these coins. So, the probability to take on of them is 5/8, and the probability of coming up with head: (5/8)*0.25 = 0.15625.

For the unfair coins, the probability of coming up with heads is 0.6, so for two flips: 0.6*0.6 = 0.36 for each unfair coins. The probability to chose one of them is 3/8, and the probability of coming up with head: (3/8)*0.36 = 0.135.

These probabilities are dependent, so to have the total probability we must sum them:

P = 0.15625 + 0.135

P = 0.29125 or

P = 0.29125 x 100% = 29.125%

4 0

3 years ago

The diameter of a circle is 19 feet what is the circumference

alexira [117]

Answer:

The circumference of a circle with a diameter of 19 feet is 59.69

Step-by-step explanation:

Not really an explanation to this.

I hope I helped you, and a "Brainliest" is always appreciated! ☺

3 0

2 years ago

Read 2 more answers

Let f(x) = x2 - 16. Find f-1(x).

Arisa [49]

$f(x)=x^2-16$

To find $f^{-1}(x)$ , (the inverse of the function) you need to first replace the f(x) with y...
$y=x^2-16$
Then switch the x and the y.
$x=y^2-16$
Solve for y.
$x+16=y^2$
Take the square root of each side...
$\boxed{y=\pm\sqrt{x+16}}$