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3 years ago

Let event A= the place is a city let event B= the place in north America which outcomes are in A or B?

Mathematics

2 answers:

Free_Kalibri [48]3 years ago

7 0

Answer:

The place is a city,The place is in north America and The place is a city in north America

Step-by-step explanation:

We are given two events:

Let event A= the place is a city

let event B= the place is in north America

we have to find the outcomes of A or B

A or B means either A is true or B is true or both are true

so, outcomes of A or B are:

The place is a city,The place is in north America and The place is a city in north America

fredd [130]3 years ago

6 0

Answer:

Step-by-step explanation:

Given two events which are

A = the event that the place is a city

and

B = the event that the place is in north America.

We have to find outcomes which are either A or B

This can be denoted as event AUB which implies A or B or both

The event A or B is defined by the place is either a city or it is in north America or a place in north America.

Hence AUB = the place is a city or place is in North America

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In a survey conducted by a website, employers were asked if they had ever sent an employee home because they were dressed inappr

MA_775_DIABLO [31]

Answer:

Test statistic Z = p diff/std error = 2.3333

p value one tailed = 0.009815

Step-by-step explanation:

Given that in a survey conducted by a website, employers were asked if they had ever sent an employee home because they were dressed inappropriately.

Sample size n = 2755

Sample favourable x = 967

Sample proportion p = $\frac{967}{2755} \\=0.3510$

$H_0: p = 0.3333\\H_a: p >0.3333$

(right tailed test at 5% significance level)

p difference = 0.0210

Standard error assuming H0 is true is $\sqrt{\frac{0.3333*0.6667}{2755} } \\=0.0090$

Test statistic Z = p diff/std error = 2.3333

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Since p <0.05 we reject null hypothesis.

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3 years ago

A landscaper is designing a flower garden in the shape of a trapezoid. She wants the shorter base to be 3 yards greater than the

wariber [46]

The formula for the area of a trapezium is as follows:

area=12(a+b)h

 Let a be the shorter base. Then a = h + 3.
Let b be the longer base. Then b = h + 7.

Substituting these values for a and b in the general formula gives: 
area = 225 = 12(h+3+h+7)h = h^2+5h

So you need to solve the following quadratic:

h^2+5h−225=0

Step 1: Use quadratic formula with a=1, b=5, c=-225.

h=−b±√b2−4ac2ah=−(5)±√(5)2−4(1)(−225)2(1)h=−5±√9252h=−5/2+5/2√37 or h=−5/2+−5/2√37

Answer:h=−5/2+52√37 or h=−5/2+−5/2√37

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4 years ago

I AM IN NEED OF HELP THANKYOU

Varvara68 [4.7K]

Oh okay I’m not going home I’m sorry I don’t have to sleep tueitu lol I

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3 years ago

I need helpppppppp I don’t like remainders :/

den301095 [7]

Answer:

The correct answer is 67 9/11

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