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3 years ago

Is it possible to divide numbers in any order without affecting the result?

Mathematics

2 answers:

deff fn [24]3 years ago

8 0

No it is not possible example;

50 divided by 100 = 1/2 but,

100 divided by 50 = 2 :)

tankabanditka [31]3 years ago

4 0

Depends on the numbers. If you have 2/2, obviously you can switch the numbers and the answer would stay the same. But if you have 2/1, you can't rearrange the numbers because you'll get a different answer.

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81 + 7x² +8yt-sx<br> if x = 2 what is the answer

lilavasa [31]

ANSWER:

109 + 8yt - 2s

WORKING:

81 + 7x² + 8yt - sx

81 + 7(2)² + 8yt - s(2)

81 + 7(4) + 8yt - 2s

81 + 28 + 8yt - 2s

109 + 8yt - 2s

6 0

2 years ago

A frame of width a surrounds a 5 by 7 inch photograph. Find the expression that represents the area of the frame in terms of a.

Arada [10]

See diagram
totalarea=totallengtht times totalwidth=(2a+5) times (2a+7)=4a²+24a+35

minus original aera
which is 5 by 7 which is 35

4a²+24a+35-35=4a²+24a

3rd option I think, can't tell which is which

4 0

3 years ago

What is the quoteint of 2/3 in 2/9

andre [41]

Answer: 3

Explanation:

2/3 divided by 2/9

2/3 times 9/2

= 3

6 0

3 years ago

Y=5(x-2)(x+1) in standard form

Harrizon [31]

5(x²+x-2x-2)
5(x²-x-2)
5x²-5x-10

you can also simplify to x²-x-2.

6 0

4 years ago

consider a sequence of independent tosses of a biased coin at times k=0,1,2,…,n. On each toss, the probability of Heads is p, an

omeli [17]

Answer:

1. p*(1-p)

2. n*p*(1-p)

3. p*(1-p)

4. 0

5. p^2*(1-p)^2

6. 57/64

Step-by-step explanation:

1. Let Ik denote the reward (possibly 0) given at time k, for k∈{1,2,…,n}. Find E[Ik].

E[Ik]= p*(1-p)

2. Using the answer to part 1, find E[R].

E[R]= n*p*(1-p)

The variance calculation is more involved because the random variables I1,I2,…,In are not independent. We begin by computing the following values.

3. If k∈{1,2,…,n}, then

E[I2k]= p*(1-p)

4. If k∈{1,2,…,n−1}, then

E[IkIk+1]= 0

5. If k≥1, ℓ≥2, and k+ℓ≤n, then

E[IkIk+ℓ]= p^2*(1-p)^2

6. Using the results above, calculate the numerical value of var(R) assuming that p=3/4, n=10.

var(R)= 57/64

5 0

3 years ago