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Phoenix [80]
3 years ago
9

About 1414​% of the population of a large country is nervous around strangersnervous around strangers. If two people are randoml

y​ selected, what is the probability both are nervous around strangersnervous around strangers​? What is the probability at least one is nervous around strangersnervous around strangers​?
Mathematics
1 answer:
seraphim [82]3 years ago
6 0

One person being nervous around strangers is assumed  independent of other people behaviour. Then, the multiplication rule can be applied as

both nervous = 0.14*0.14 = 0.0196 = 1.96%

one is nervous, one is not nervous = 0.14*(1-0.14) = 0.1204 = 12.04%

At least one nervous = 1.96%  + 12.04% = 14%

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Two cubes have their surface areas in the ratio 1:4 , what is the ratio of their volumes ?
yKpoI14uk [10]

Answer:

1 : 8

Step-by-step explanation:

For similar figures with ratio of sides = a : b

Then ratio of areas = a² : b² and

ratio of volumes = a³ : b³

Given ratio of areas = 1 : 4

linear ratio = \sqrt{1} : \sqrt{4} = 1 : 2

ratio of volumes = 1³ : 2³ = 1 : 8


8 0
3 years ago
What is the number and the question of 2+2
Maurinko [17]
The answer is 4. The question is what is 2+2?
5 0
3 years ago
Find the measure of DB (a curvy line is on top of DB btw)
klasskru [66]

Answer:

Arc DB = 146

x = 5

Step-by-step explanation:

Remark

The relationship between the large arc, the small arc and the intersecting angle is

1/2 (large arc - small arc) = intersecting angle.

Givens

Large arc = 25x + 21

Small arc = 96

5x

Solution

1/2*(25x + 21 - 96) = 5x*2            Multiply both sides by 2

25x + 21 - 96 = 10 x                     Combine      

25x - 75 = 10x                             Subtract 25x from both sides

-75 = 10x - 25x

-15x = -75

x = 5

DB = 25x + 21

DB = 25*5 + 21

DB = 125 + 21

DB = 146

Tell me if this is not in the choices.

5 0
3 years ago
PLEASE HELP DUE IN 20 MINUTES FIND X AND SHOW YOUR WORK PLEASE
Vlad1618 [11]

Answer:

x = 7°

Step-by-step explanation:

3x° - 53° = x° + 67°

2x° = 14°

x° = 7°

3 0
2 years ago
The circle graph shows the results of a survey by a bakery on which of their new products 105 customerspreferred most. How many
Katen [24]

If 105 customers were the total, and 35% prefers cake, we must calculate 35% of 105, then we must do 105 multiplied by 35%, we can doit transforming the 35% in the fraction notation:

35\%=\frac{35}{100}

And the multiplication

105\cdot\frac{35}{100}=36.75

Therefore, if we round it to the nearest whole number, the number of customers that prefer cake is 37.

37 customers prefer cake.

4 0
1 year ago
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