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3 years ago

If you flip a coin 3 times what is the probability of getting at least 2 tails

Mathematics

2 answers:

Softa [21]3 years ago

5 0

$|\Omega|=2^3=8\\ |A|=4\\\\ P(A)=\dfrac{4}{8}=\dfrac{1}{2}=50\%$

elixir [45]3 years ago

4 0

If you flipped a coin 3 times:{

Total number of possible outcomes = 2³ = 8

Total number of outcomes with at least 2 tails = 4
{HTT , THT, TTH, TTT}

P(at least 2 tails ) = 4/8 = 1/2

Answer: 1/2

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In my number, both digits are even numbers. The digit in the tens place is less than the digit in the ones place. The sum of the

valina [46]

Answer:

I think it's 24.

Step-by-step explanation:

2 and 4 are both even numbers. 2, the digit in the tens place is less than 4, the digit in the ones place. 2 + 4 = 6

Hope this helps!

8 0

4 years ago

20.301_____ 20.31 is this equal or greater

VikaD [51]

20.31 is the same as 20.310

So, 20.301 is less than 20.310

5 0

3 years ago

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A gym charges a one-time registration fee as well as a monthly fee. The cost of joining the gym for 4 months is $370, and the co

Anna007 [38]

$x-\ registration\ fee\\
y-\ monthly\ fee\\\\
 \left \{ {{x+4y=370} \atop {x+6y=530\ \ |*(-1)}} \right. \\\\
 \left \{ {{x+4y=370} \atop {-x-6y=-530}} \right. \\+-----\\Addition\\\\
-2y=-160\ \ | divide\ by\ -2\\
y=80\\\\
x=370-4y=370-4*80=370-320=50\\\\
Registration\ fee\ is\ equal\ to\ 50\$\ and\ monthly\ fee\ is\ equal\ to\ 80\$.
$

8 0

3 years ago

A town has a population of 2000 and grows at 4% every year write an equation to represent the scenario

vfiekz [6]

Answer: $P=2000(1.04)^t$ .

Step-by-step explanation:

It is given that,

Initial population of a town = 2000

Growth rate = 4% = 0.04 per year

The exponential growth function for population is

$P=P_0(1+r)^t$

where, $P_0$ is initial population, r is growth rate and t is number of years.

Substitute $P_0=2000,r=0.04$ in the above equation.

$P=2000(1+0.04)^t$

$P=2000(1.04)^t$

Therefore, the required equation is $P=2000(1.04)^t$ , where P is population after t years.

7 0

3 years ago

A proofreader earns $8.50 for each page that he proofreads. If he works 7.5 hours and proofreads 14 pages each day on average, w

dimulka [17.4K]

Answer:

$15.8666666667 an hour on average

Step-by-step explanation:

14/7.5=1.8666666666

this means that for every hour the proofreader is working he proof reads 1.8666667 pages since he makes 8.5 for every page we have to multiply the pages per hour times the salary of every page to get his average hourly wage

1.8666666666 * 8.5 = $15.8666666667 an hour on average

7 0

3 years ago

Read 2 more answers