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Tju [1.3M]
3 years ago
11

Of the last 16 trains to arrive at Yardley Station, 14 were on time. What is the experimental probability that the next train to

arrive will be on time?
Mathematics
1 answer:
Mama L [17]3 years ago
4 0

Answer:

The experimental probability that the next train to arrive will be on time is P(T) = \frac{14}{16} = 0.875

Step-by-step explanation:

Experimental Probablity is based on the experiments which we have performed in the past. In this case, of the total number of trains (16), the total number of trains which arrived on time is (14). So the probablity tat the next train to arrive will be on time would be calculated as:

= \frac{14}{16}

= 0.875

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What type (irrational, Rational, whole, natural, integer) of numbers are these?
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Answer:

See Below

Step-by-step explanation:

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5 0
3 years ago
-12x - 12y = 4 3x + 3y = 0
Svetradugi [14.3K]

Answer:

no Solution

Step-by-step explanation:

-12x-12y=4\\ 3x+3y=0

12x-12y=4

add 12y to both sides

12x-12y+12y=4+12y

divid both sides by -12

\frac{-12x}{-12}=\frac{4}{-12}+\frac{12y}{-12}

simplfy

x=-\frac{1+3y}{3}

\mathrm{Substitute\:}x=-\frac{1+3y}{3}

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7 0
3 years ago
A 4. 9-mm-wide swimming pool is filled to the top. The bottom of the pool becomes completely shaded in the afternoon when the su
cestrela7 [59]

The depth of the swimming pool that is filled to the top is; 4 m

<h3>Snell's Law</h3>

I have attached a schematic diagram showing this question.

The correct width of the pool is 4 meters. Thus; w = 4 m

Incident Angle; θ₁ = 20°

A right angle is 90° and so the angle θ₂ is calculated from;

θ₂ = 90° - θ₁

θ₂ = 90° - 20°

θ₂ = 70°

We can use snell's law formula to find θ₃.

Thus;

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where;

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n₂ is refractive index of water = 1.33

Thus;

1*sin 70 = 1.33*sin θ₃

sin θ₃ = (sin 70)/1.33

Solving this gives;

θ₃ = 44.95°

By usage of trigonometric ratios we can find the depth of the pool using;

w/d = tan θ₃

Thus;

d = w/(tan θ₃)

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Read more about Snell's Law at; brainly.com/question/10112549

6 0
2 years ago
1
pychu [463]
B and D when you multiply them there 11.16 but we want 1.116
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