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2 years ago

If you flip a coin 20 times and it lands on heads 7 times what is the theoretical probaility that it will land on heads

Mathematics

1 answer:

Archy [21]2 years ago

5 0

The theoretical probability would be 10/20 but the experimental probability was 7/20.

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Simplify (−3c3w5)3 ..................................

ivanzaharov [21]

Answer:

= −9 c 3w 5

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5 0

3 years ago

Natalie practices the piano 588 minutes in 2 weeks. If t represents the total time she

Ostrovityanka [42]

Answer:

T=14D

Step-by-step explanation:

I think? sorry if wrong

4 0

3 years ago

Please help for number 8 I don't understand.

Ksju [112]

Answer:

8a. x = 16√3

8b. y = 8√3

Step-by-step explanation:

8a. Determination of the value of x

Adjacent = 24

Hypothenus = x

Angle θ = 30°

The value of x can be obtained by using cosine ratio as illustrated below:

Cos θ = Adjacent /Hypothenus

Cos 30 = 24 / x

√3/2 = 24/x

Cross multiply

x × √3 = 2× 24

x × √3 = 48

Divide both side by √3

x = 48/√3

Rationalise

x = 48/√3 × √3/√3

x = 48√3 / √3 × √3

x = 48√3 / 3

x = 16√3

8b. Determination of the value of y

Opposite = y

Adjacent = 24

Angle θ = 30°

The value of y can be obtained by using Tan ratio as illustrated below:

Tan θ = Opposite / Adjacent

Tan 30 = y / 24

1 / √3 = y /24

Cross multiply

y × √3 = 1 × 24

y × √3 = 24

Divide both side by √3

y = 24 /√3

Rationalise

y = 24 /√3 × √3/√3

y = 24 ×√3 / √3 × √3

y = 24√3 / 3

y = 8√3

8 0

2 years ago

Which equation could be used to find the height of the flagpole?

Andrew [12]

Given a fragpole which makes a right angle with the point of observation with the angle of elevation as 50°.

Let x be the height of the flagpole, then

$\sin50^o= \frac{x}{5}$

Therefore, the equation that could be used to find the height of the flagpole is
x/5 = sin 50

6 0

3 years ago

PolarNik [594]

Answer:

A. y = -x -2

Step-by-step explanation:

thanks for the questions.

4 0

3 years ago