3 years ago

If a penny is tossed three times and comes up heads all three times, the probability of heads on the fourth trial is ___.

1 answer:

3 0

The probability is 1/2 to get heads on the fourth trail.

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guapka [62]

Answer: 20

Step-by-step explanation:

Let 's complete our quadrilateral to a rectangle ; and subtract from it the area highlighted in red

$\displaystyle \rm S_{\diamond}=6\cdot 5 =30 \\\\ S_{ABCD}=30-(5:2+5:2+5:2+3:2+1\cdot1)=30-(7,5+1,5+1)=\\\\30-10=20 \\\\ S_{ABCD}=20$

4 0

3 years ago

Aneli [31]

Answer:

31 and 37 are the only prime numbers between 30 and 40

5 0

3 years ago

zvonat [6]

I’m pretty sure that the answer is A. 4

4 0

3 years ago

barxatty [35]

X = 15

X + 90 = 7x

X = 7x - 90

X - 7x = -90

-6x = 90

Divide both sides by -6

X = 15

3 0

3 years ago

lakkis [162]

Answer:

y = (C-Ax) /B and x = (C-By)/A

Step-by-step explanation:

By = C-Ax

y = (C-Ax)/B

Ax = C-By

x = (C-By)/A

8 0

4 years ago