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1 year ago

What is the probability of a passenger on the titanic ship surveying given they were in first class?

Mathematics

1 answer:

In-s [12.5K]1 year ago

3 0

Number of first class passengers = 325

Number of surviving passengers that took first class = 203

The probability that a passenger survived given that they took taking first class is

number of surviving passengers in first class/number of first class passengers. Thus, the probability is 203/325

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A weather forecaster predicts that the May rainfall in a local area will be between 3 and 4 inches but has no idea where within

Alex777 [14]

Answer:

3/4

Step-by-step explanation:

3 0

3 years ago

2. US$ 1.7135

Brrunno [24]

Answer:

1577.8 US dollars are received for 1127 UK pounds.

5669.5 UK pounds are received for US$7937.3.

Step-by-step explanation:

The questions are solved by proportions, using a rule of three.

How many US dollars are received for 1127 UK pounds?

1 UK pound = 1.4 US dollars

1127 UK pounds - x US dollars

Applying cross multiplication:

$x = 1127*1.4 = 1577.8$

1577.8 US dollars are received for 1127 UK pounds.

How many UK pounds are received for US$7937.3?

1 UK pound = 1.4 US dollars

x UK pounds - 7937.3 US dollars

$1.4x = 7937.3$

$x = \frac{7937.3}{1.4}$

$x = 5669.5
$

5669.5 UK pounds are received for US$7937.3.

4 0

3 years ago

Round 0.0695712 to 2 significant figures

ddd [48]

0.070 is rounded to 2 significant figures

6 0

3 years ago

A bike tire just ran over a nail, and it is losing pressure at a rate of 10% every minute. The tire pressure is currently 1,060

kompoz [17]

Answer:

636 kilopascals

Step-by-step explanation:

4 x 10 is 40

It will lose 40% after 4 minutes

Multiply 1060 by 0.60

The answer is 636 kilopascals

8 0

3 years ago

Read 2 more answers

Write the equation for the parabola that has x− intercepts (−2,0) and (1.2,0) and y− intercept (0,−4).

schepotkina [342]

Answer: The answer is $15y+4=25(x-1.6)^2.$

Step-by-step explanation: We are to find the equation of the parabola with x-intercepts (-2,0), (1.2,0) and y-intercept (0,-4).

Therefore, axis of symmetry is

$x=\dfrac{1.2+2}{2}\\\\\Rightarrow x=1.6.$

Let the equation of the parabola be $y=a(x-1.6)^2+k.$

Substituting the points (x,y)=(0,-4) and (1.2,0) in the above equation, we find that

$-4=a(0-1.6)^2+k\\\\\Rightarrow k=-2.56a-4$

and

$0=a(1.2-1.6)^2+k\\\\\Rightarrow k=-0.16a.$

Solving the above two equations, we get

$a=-\dfrac{5}{3}~~\textup{and}~~k=-\dfrac{4}{15}.$

So, putting the values of 'a' and 'k' in the equation of the parabola, we get

$y=-\dfrac{5}{3}(x-1.6)^2-\dfrac{4}{15}\\\\\Rightarrow 15y+4=-25(x-1.6)^2.$

Thus, the equation of the parabola is $15y+4=25(x-1.6)^2.$

3 0

4 years ago