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agasfer [191]
3 years ago
14

If you roll three fair coins what is the probability that youll get at least 2 heads

Mathematics
2 answers:
blagie [28]3 years ago
6 0

Answer:

1/2 or 50%

Step-by-step explanation:

You can use some casework to find your answer.

The first case - only two of the coins are heads.

The possible ways that this could be are:

THH

HTH

HHT

The second case - all three coins are heads.

In this instance, there is only one way that this could happen:

HHH

This is a total of 4 desired outcomes out of 2*2*2=8 possible outcomes, which is a probability of 4/8=1/2. Hope this helps!

Dennis_Churaev [7]3 years ago
6 0

Answer:  12.5

Step-by-step explanation:

100/2=50/2=25/2=12.5

HOPE THIS HELP

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Blizzard [7]

Answer:

C. 4 times x squared plus 6 times x minus 3 minus 12 over the quantity 2 times x plus 1

Step-by-step explanation:

f(x) = 8x^3 + 16x^2 − 15

g(x) = 2x + 1.

f(x) / g(x) = (8x^3 + 16x^2 − 15) / (2x + 1)

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Round to the place value of the underlined digit 862,840 underlined 6
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Answer:

900,000

Step-by-step explanation:

there you go bud

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What is an equation of the line that passes through the point (1,6) and is perpendicular to the line x+3y=27
nadezda [96]

Answer:Which of the following is true about fiber in foods?

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5 0
3 years ago
HELP PLSS
atroni [7]

The balloon reaches a height of 7 feet at 0.1 seconds and 2.13 seconds

<h3>How to determine the time the balloon is at the height?</h3>

The equation of the function is given as

h(t)= -16t^2 + 35t + 5

The above equation is a quadratic equation

When the balloon is at a height of 7 feet, we have

h(t) = 7

So, we have the following equations

h(t)= -16t^2 + 35t + 5

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Next, we plot the equations on a graph (see attachment)

The equations intersect at

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Approximate

t = 0.1 and 2.13

Hence, the times are 0.1 seconds and 2.13 seconds

Read more about quadratic equation at

brainly.com/question/15709421

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