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3 years ago

Help Me With Functions Part 4.

Mathematics

2 answers:

Leona [35]3 years ago

5 0

For this one It will be B.X

Strike441 [17]3 years ago

3 0

Answer:

for this one, your answer will be B.X

Step-by-step explanation:

It is X because each element in x is mapped to exactly one element in y.

In X 6 maps to 4,2; in y 6 maps to 6,2; in Z 7 maps to 2,8.

so every element in x should map to exactly one element in y and it is possible only in the set X so the answer is X.

hope it helps....

have a great day.

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I WILL MARK BRAINLIEST!!!!!!!!!!!!!

lesantik [10]

Answer:

Step-by-step explanation:

there are 4 answers for each question, thats 8 all together. Two of the 4 are one vaild answers. Take 2/8 * 2/8 = 4/64 then you reduce that and get 1/16

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3 years ago

30 PTS!! Can someone PLEASE rephrase this? The compass and straightedge is more important in constructing geometric structures t

jek_recluse [69]

Answer:

Step-by-step explanation:

This study investigated three mathematics teachers' construction process of geometric structures using compass and straightedge. The teacher-student-tool interaction was analysed. The study consists of the use of a compass and straightedge by the teachers, the ideas of the teachers about their use, and the observations regarding the learning process during the construction of the geometric structures. A semi-structured interview was conducted with the teachers about the importance of the use of a compass and straightedge to construct geometric structures. It was found that teachers taught compass and straightedge constructions in a rote manner where learning is little more than steps in a process. The study concludes with some suggestions for the use of a compass and straightedge in mathematics classes based on the research results. SUMMARY Purpose and significance: For more than 2,000 years, the way in which geometric structures could be constructed with the help of compasses and straightedges has caught the attention of mathematicians. Nowadays, mathematics curriculums place an emphasis on the use of the compass and straightedge. The compass and straightedge is more important in constructing geometric structures than other drawing tools such as rulers and protractors. Because steps taken with a compass and straightedge cannot be seen at first glance and this situation become a problem for students. However, 'doing compass and straightedge construction early in the course helps students to understand properties of figures'

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4 years ago

Round to the nearest hundredth. Question is BC=

AveGali [126]

Answer:

BC = 15.01

Step-by-step explanation:

7 x tan(65) = 15.01154844

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3 years ago

Need the answer quick

Alchen [17]

Answer:

40 cm

Step-by-step explanation:

This is because the angle opposite the x is equal to the angle opposite the 40 cm making the sides equal as well.

6 0

3 years ago

Use binomial expansion to solve each exercise. (a) Find the coefficient of xy19 in (3x − 2y) 20.(b) Give a formula for the coeff

pishuonlain [190]

9514 1404 393

Answer:

(a) -29,884,416

(b) C(n,(n -k)/2) . . . where C(n,k) = n!/(k!(n-k)!) and k ∈ ℕ

Step-by-step explanation:

(a) The coefficient of the k-th term of the expansion is ...

C(20,k)(3x)^(20-k)(-2y)^k

For k=19, this is ...

19(3x)(-2y)^19 = -29,884,416xy^19

The coefficient of the term is -29,884,416.

(b) The p-th term of the expansion of (x +1/x)^n is ...

C(n,p)(x^(n-p)(1/x)^p = C(n,p)(x^(n-2p))

For some exponent k of x, the value of p will be ...

k = n -2p

p = (n -k)/2

Then the coefficient of x^k will be C(n, (n-k)/2), where C(n, x) = n!/(x!(n-x)!).

You will notice that there will only be a term x^k for k having the same parity as n.

5 0

3 years ago