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Afina-wow [57]
3 years ago
13

A fair coin is tossed three times. What is the probability of getting at least two heads?

Mathematics
1 answer:
sleet_krkn [62]3 years ago
6 0
The answer is 50%

if you list out the possibilities, you get

(H being heads, T being tails)

HHH <- 3 heads
HHT <- 2 heads
HTH <- 2 heads
HTT
THH <- 2 heads
THT
TTH
TTT

we counted 4 of them to have at least 2 heads out of the 8 possibilities

4/8 = 1/2 which is 50%
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The mass of a cube,
Nonamiya [84]

The mass in kg is 106.27 if the mass of a cube, M (kg), is proportional to the cube of the length of its edge, L(m).

<h3>What is a proportional relationship?</h3>

It is defined as the relationship between two variables when the first variable increases, the second variable also increases according to the constant factor.

We have:

The mass of a cube, M (kg), is proportional to the cube of the length of its edge, L(m).

M ∝ L³

After removing proportional sign

M = cL³

Plug M = 50 kg and L = 70 cm = 0.7 m

50 = c(0.7)³

c = 145.77 kg/m³

If L = 0.9 m, then M

M = (145.77 kg/m³)(0.9 m)³

M = 106.266 ≈ 106.27 kg

Thus, the mass in kg is 106.27 if the mass of a cube, M (kg), is proportional to the cube of the length of its edge, L(m).

Learn more about the proportional here:

brainly.com/question/14263719

#SPJ1

3 0
2 years ago
Could someone solve for X, Y and Z
tatyana61 [14]

Answer:

x=10,y=5,z=2

Step-by-step explanation:

x+15=2x+5

x=10

4y=8y-20

4y=20

y=5

10z-5=3z+9

7z=14

z=2

5 0
3 years ago
What is the solution to the system of equations graphed below?
FrozenT [24]

Step-by-step explanation:

The intersection point of the two equations is the solution of the system.

(-5,1)

3 0
3 years ago
Read 2 more answers
IS CELL REPLICATION THE SAME THING AS DNA REPLICATION OR ARE THEY TWO SEPERATE THINGS
WARRIOR [948]

Answer:

See below:

Step-by-step explanation:

So, first of all, we know that Cell and DNA Replication are different just by looking at their names.

Cell Replication is to replicate cells and not DNA whereas DNA replication replicates DNA but not cells.

We do know that DNA resides inside Cells what we call eukaryotes.

So, in short, no, they are different things.

Cheers!

3 0
3 years ago
Read 2 more answers
Explain why converting from meters to centimeters uses a different exponent than converting from meters to millimeters.
MissTica

Answer:

Well, centimetre and millimetre both are same smaller unit than the metre.

So, to convert from metre to millimetre a centimetre, we have to multiply by a number greater than 1 .

1m = 100cm

1m = 1000mm

So multiply by 100 or 10^2 to convert from metre to centimetre .

And multiply by 1000 or 10^3 to convert from metre to millimetre .

Step-by-step explanation:

hope it helps

~Adrianna

8 0
3 years ago
Read 2 more answers
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