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3 years ago

This is for union and intersection. I need help.

1 answer:

6 0

Problem 11) Start with set U = {1,2,3,4,5} and cross off 1,2,3 to be left with A' = {4,5}. We basically erase everything found in set A. You have the correct answer. Nice job.

Problem 12) Start with U = {1,2,3,4,5} and erase '5' to be left with {1,2,3,4}. So B' = {1,2,3,4}. You are correct here as well.

I can't help with the other problems since either letters, numbers or symbols are missing. Please make a new post and provide those updates.

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Which of the following polynomials is the expansion of (x - y)4? x4 - x3y + x2y2 - 2xy3 + y4 x4 -2x3y3 + y4 x4 - 2x3y + x 2y 2 -

sammy [17]

Answer:

$(x-y)^4=x^4-x^3y+6x^2y^2-4xy^3+y^4$ .

Step-by-step explanation:

We want to find the polynomial that will result from expanding:

$(x-y)^4$ .

Recall that we can use the Pascal's triangle to obtain the coefficient as:

1 4 6 4 1

Also note how the negative sign is going to alternate.

The <em>power of x </em>will decrease from left to right while the <em>power of y</em> increases from left to right

The expansion then becomes:

$(x-y)^4=x^4-x^3y+6x^2y^2-4xy^3+y^4$ .

7 0

3 years ago

I need help fast!pleaseeeee!

Setler [38]

The answer is c the 3rd one

6 0

3 years ago

a 42 inch diameter tablecloth that hangs off the edge 8 inches. what is the area of the tablecloth use 3.14 for pi

joja [24]

Answer: 1384.74

Step-by-step explanation:

A=πr^2

radius=42/2=21

(3.14)(21)^2

3.14(441)

1384.74

3 0

3 years ago

The energy usages per day (in kilowatt-hours) of houses on Hamlet Avenue are listed below. \qquad 30, 23, 38, 36, 3330,23,38,36,

Bogdan [553]

Answer:

32 kilowatt-hours.

Step-by-step explanation:

The energy usages per day (in kilowatt-hours) of houses on Hamlet Avenue are listed below:

30, 23, 38, 36, 33.

Therefore, the mean energy usage per day of the houses of Hamlet Avenue will be

= $\frac{30 + 23 + 38 + 36 + 33}{5}$

= 32 kilowatt-hours.

The mean of n numbers is given by, $\frac{\textrm {Sum of all the n numbers}}{n}$ . (Answer)

3 0

3 years ago

Given f(y) will mark brainly

Paraphin [41]

Answer:

y = -0.904, 19.904

Step-by-step explanation:

f(y) = 9

f(y) = sqrt(y + 99)

-------------------------------------------

9 = sqrt(y +99) - y

81 - 18y + y^2= y + 99

-19y + y^2 = 18

y(y - 19) = 18

y = -0.904, 19.904

(I used a calculator to solve those values)

5 0

3 years ago