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sammy [17]
3 years ago
15

Plz help!!will give the brainliestneed explanation.​

Mathematics
2 answers:
Kazeer [188]3 years ago
6 0

Answer:

x =9

Step-by-step explanation:

A \cup B =29

-->A = 29 -17 = 12

-->B = 29 -21 = 8

x=A \cap B =A \cup B - A - B= 29 - 12 - 8 = 9

Marat540 [252]3 years ago
3 0
So to find x, you have to add both A and B which is 38. Since AuB (excluding the overlap) is 29, subtract 38 from 29 and you get 9 for x.
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Double checking to see if i'm right!
Vinvika [58]

Answer:

Yep! That looks right!

Step-by-step explanation:

4 0
3 years ago
How can I solve this proof?? PLZ HELP I DONT UNDERSTAND!! Thanks !!
love history [14]

Hello from MrBillDoesMath!

Answer:

See below


Discussion:

Triangles BAD and BCD are congruent by the SAS postulate.

          * Side AD = DC because BD is the perpendicular bisector  of AC.

          * Angle ADB and CDB are both right angles, and hence equal, because

            BD is the perpendicular bisector of AC)


Corresponding parts of congruent triangles are equal so angle BAD = angle BCD,  which was to be proven.


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8 0
3 years ago
Divide. Round to the nearest tenth? 2.1/1.488
Keith_Richards [23]
<span>2.1/1.488
</span><span>=<span>1.41129

Rounded to the nearest tenth is, </span></span><span>1.4.

I hope this helped! ;)</span>
4 0
3 years ago
Read 2 more answers
Mr. Wilson is giving his students a vocabulary test tomorrow over all the terms they have learned from this semester. Today, he
Y_Kistochka [10]
The population in the above situation is the total number of students under Mr. Wilson.

A sample is a part of the population that may best represent the population. There is no sample  in the above situation because Mr. Wilson made all students pick 5 note cards. He will be able to determine the performance of each student based on their performance in picking 5 note cards and defining the terms in each card.




5 0
3 years ago
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kozerog [31]

Answer:

b. A binomial variable with 25 independent trials

Step-by-step explanation:

The conducted experiment is binomial experiment because outcome can be divided into success or failure. The success would be the people who read novel in the past year and also responses are independent of each other. We have to find the number of trials n in the given problem.

we are given that variance of R=6 and p=probability of success=0.4.

We know that variance of binomial distribution is

Variance=npq

where q=1-p=1-0.4=0.6.

By putting the values in variance formula, we can get the value of n.

6=n*0.4*0.6

6=0.24*n

n=6/0.24

n=25

Hence, random variable R is a binomial variable with 25 independent trials.

4 0
3 years ago
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