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3 years ago

Which fraction shows the probability that lily will flip a heads, a tails, and then heads

Mathematics

1 answer:

schepotkina [342]3 years ago

5 0

Answer:

d, 1/6

Step-by-step explanation:

so i did a diagram of some sorts to do this and got around six possible outcomes.

h is heads, t is tails.

h-h-h

t-t-t

h-t-h

t-h-t

t-t-h

h-h-t

feel free to correct me if any of this is wrong.

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Given the sample −4, −10, −16, 8, −12, add one more sample value that will make the mean equal to 3.

Agata [3.3K]

Answer: The value to add to the set is 52

=======================================================

For a moment, ignore the extra value we'll add in later.

The given set of values add to -34.

Let x be the extra value we add in. It adds to the -34 to get -34+x, then we divide by 6 because the set {-4,-10,-16,8,-12,x} has 6 items.

So we get the mean (-34+x)/6

Set this equal to the mean we want (3) and solve for x

(-34+x)/6 = 3

-34+x = 6*3

-34+x = 18

x = 18+34

x = 52

The set {-4,-10,-16,8,-12,x} updates to {-4,-10,-16,8,-12,52} and this set has a mean of 3.

6 0

3 years ago

A rectangle has length x cm and width 2 cm less

vichka [17]

x^2 - 2x = 146

x^2 - 2x - 146 = 0

See attachment. The quadratic formula is needed in this case.

7 0

3 years ago

Read 2 more answers

Can you simplify 4+6(3)+2(5 1/2 -1)

Greeley [361]

Answer:

5 1/2 - 1 = 4.5

4+ 18= 22

2(4.5) = 9

22+ 9 = 31

Step-by-step explanation:

7 0

3 years ago

How microentrepreneurs change the community/why are they important/how have they changed Africa

Blizzard [7]

Answer :We see three key obstacles to the economic advancement of micro-entrepreneurs: 1. They lack basic business skills. The management practices of most micro-entrepreneurs are a world away from those taught at leading business schools. They continue to use the set of practices they have seen and used for generations, even though demonstrably better options exis

5 0

2 years ago

What is the coefficient of x2 in the expansion of (x + 2)3?

wolverine [178]

One way is that you can just factor it out: (x+2)(x+2)(x+2)
For the first pair, you get $x^2+4x+4$ .
Then do $(x^2+4x+4)$ * $(x+2)$
That will be $x^3+6x^2+12x+8$
So the answer is 6

4 0

3 years ago