Helppp pleaseeee sssjejejheje

I assume A - B is the complement of B in A, i.e. all elements of A that do not belong to B.

To prove equality between two sets, you have to show they are subsets of one another. To prove one set is a subset of another set, you have to show that any element in the first set belongs to the second set.

So, to show that A - B = A ∩ (C - B), you have to prove

• A - B ⊆ A ∩ (C - B)

• A ∩ (C - B) ⊆ A - B

Left to right:

Let x ∈ A - B.

By definition of set complement, x ∈ A and x ∉ B.

Since A ⊆ C,  x ∈ C.

So x ∈ C - B, and by definition of set intersection, x ∈ A ∩ (C - B).

This proves A - B ⊆ A ∩ (C - B).

Right to left:

Let x ∈ A ∩ (C - B).

By definition of set intersection, x ∈ A and x ∈ C - B.

By definition of set complement, x ∈ C and x ∉ B.

Again by definition of complement, x ∈ A and x ∉ B means that x ∈ A - B.

This proves A ∩ (C - B) ⊆ A - B.

Both sets are subsets of one another, so A - B = A ∩ (C - B).

Answer:

5) A 16(-8)

6) C. 26 + (-5)

7) B. -6°

Step-by-step explanation:

5. A turtle dives towards deeper water at a rate of 8 inches per second. It continues for a total of 16 seconds.

Which expression represents this situation?

We are given Maya's diving rate as:

8 inches per second

Because she is diving, the rate carries a negative sign hence, the expression of the situation is:

16 × -8

= 16(-8)

Option A 16(-8) is correct

6. Marisa has $26 in her purse. She pays $5 for lunch. Which expression represents this situation?

Amount she has =$28

She pays = $5

Hence, $26 + (-$5)

= $26 - $5

Option C. 26 + (-5) is correct

7. Aaron turned on his air conditioning and the temperature in his apartment decreased 6 degrees.

Write an integer to represent the change in temperature.

A decrease or drop in temperature is always expressed as a negative sign. Hence,

Option B. -6° is correct

Answer:

12 miles.

15*4=60

3*4=12

12 miles

Answer:

-256

Step-by-step explanation:

Each number is being multiplied by 2 so the pattern goes -4,-8,-16,-32,-64,-128,-256. Each number is being multiplied by 2

Answer:

30 minutes

Step-by-step explanation:

Answer:

you divide 90 with 5 and it gives 18

so she gets 18 dollars an hour which if you divide by 2 gives 9

so every 30 min she gets 9 dollars

Answer:

12 feet

Step-by-step explanation:

the total height of the building is 72 feet

the building is divided into 6 stories

we want to find the height of each story

72/6, which is 12

Hi there & welcome to brainly!

Answer:

[tex] \huge{ \boxed{ \bold{ \tt{ \frac{ - 3}{7} }}}}[/tex]

Step-by-step explanation:

[tex] \text{Let \: the \: points \: be \: A \: and \: B}[/tex]

[tex] \rm{ A(1 \:, 7) \longrightarrow \: (x1 \:, y1)}[/tex]

[tex] \rm{B(8 \:, 4) \longrightarrow \: (x2 \: ,y2)}[/tex]

[tex] \underline{ \text{Finding \: the \: slope \: }} : [/tex]

[tex] \boxed{ \rm{slope = \frac{y2 - y1}{x - x1} }}[/tex]

[tex] \rm{↦slope = \frac{4 - 7}{8 - 1} }[/tex]

Remember!

[tex] \rm{↦ \: slope \: = \boxed{ \frac{ - 3}{7} }}[/tex]

Hope I helped!

Best regards! :D

~[tex] \text{TheAnimeGirl}[/tex]

Answer:

yellow, black, cyan, magenta

Step-by-step explanation:

Answer:

0.55555556

Step-by-step explanation:

Answer:

Standard error for the sample = $0.12 million

Step-by-step explanation:

Given:

Mean = $3.26 million

Standard deviation = $1.2 million

Number of sample = 100

Find:

Standard error for the sample

Computation:

Standard error for the sample = Standard deviation / √Number of sample

Standard error for the sample = 1.2 / √100

Standard error for the sample = $0.12 million

Answer:

the answer is A

Step-by-step explanation:beacuse ik its right

Hello,

[tex]x^2+y^2-4x+2y-4=0\\\\<=> (x-2)^2-2^2+(y+1)^2-1^2-4=0 \\ \\<=>(x-2)^2+(y+1)^2=9[/tex]

[tex](x+2)^2+(y-3)^2=9\\\\<=> x^2+4x+4+y^2-6y+9=9\\ \\<=>x^2+y^2+4x-6y+4=0[/tex]

Thanks

Answer:

Step-by-step explanation:

The Area of a triangle is expressed as:

A = 1/2 bh

b is the base of the triangle

h is the height of the triangle

Given

dh/dt = 3cm/min

dA/dt = 11cm²/min

height h = 5cm

Area = 10cm²

Get the base first

10 = 1/2b(5)

20 = 5b

b = 20/5

b = 4cm

Differentiating the area with respect to time

A(b, h) = 1/2 bh

According to product rule

dA/dt = 1/2{b dh/dt + h db/dt}

Substitute the given parameters and get db/dt

11 = 1/2{4(3)+5db/dt}

11 = 1/2{12+5 db/dt}

11 = 6 + 5/2 db/dt

11-6 = 5/2 db/dt

5 = 5/2 db/dt

1 = 1/2 db/dt

cross multiply

2 = db/dt

db/dt = 2cm/min

Hence the rate at which the base of the triangle is changing id 2cm/min

Answer:

y=2x-2

Step-by-step explanation:

When looking at the line, you can see the y-intercept is at the point (0,2) so it meets the y-axis at that point.  Then, when you look at the pattern between the points on the line, you can see the line has a slope of 2, making the answer y=2x-2

Answer:

24/30 is

Step-by-step explanation:

0.8

Answer:

Step-by-step explanation:

2*10=20

5*5=25

20-25=-5

Her points is -5 because she caught two fish that means its +20 points but she caught 5 crab that means she loss -25 points thats why its -5 (negative 5)

Answer:

0.599 or 0.6

Step-by-step explanation:

We will be using the alphabets M and N in this solution.

Let M be that one of the number is even

Let N be that the sum is 8

The sample space of these two dice when rolled is 36

Probability of 8 and even numbers is (4,4),(6,2),(2,6)

= 3/36 = 0.08333

Probability of sum of 8 is (4,4),(5,3)(3,5),(6,2),(2,6)

= 5/36 = 0.1389

P(M|N) = 0.08333/0.1389

= 0.599

Approximately 0.6

Answer:

0.6

Step-by-step explanation:

9514 1404 393

Answer:

  J  24

Step-by-step explanation:

Count the number of outcomes from the coin toss. There are 2: heads or tails.

For each of those, there are 3 outcomes from the marble pick: R, Y, G. So the tree up to this point has 2·3 = 6 leaves:

  head - R

  head - Y

  head - G

  tail - R

  tail - Y

  tail - G

__

For each of these 6 outcomes so far, spinning the spinner will add 4 more. That will bring the total of possible outcomes to ...

  2 × 3 × 4 = 24 . . . outcomes

The short answer is that the total number of outcomes is the product of the numbers of possibilities at each stage.

Answer: Yes

1.7 and 1.700 have the same value because zeros have no value, and without the zeros, 1.700 would turn into 1.7. It is not like there is another number that is not zero after the two zeros either.

Answer:

the numbers are missing, so I looked for a similar question:

If you copy a document on a machine, you should get a similar copy. suppose you want to reduce a document to 1/6 of its original size, and first reduce it by 25%. By what percent do you need to reduce the copy to obtain the desirable size?

You want the copy to be 1/6 of the original size = 16.67%

Since you first reduced the copy by 25%, the image is now 75% of its original size. In order to finally obtain a copy that is 16.67% of the original size, you must reduce this second copy by 1 - (16.67%/75%) = 77.78% ≈ 78%.

we can check our answer:

size of second copy x (1 - reduction)

0.75 x (1 - 0.7778) = 0.1667

Answer:

Well they are equal so sorry.

Answer: uhh I'm pretty sure they are equal, is it multiple choice?

Step-by-step explanation:

Answer:

$3.5

Step-by-step explanation:

14 divided by 4 is 3.5

Ratio table can help you find equivalent ratios in order to solve problems.

A ratio is an ordered pair of numbers a and b, written a / b where b does not equal 0.

Ratio tables show equivalent ratios between two quantities. You can create a ratio table by multiplying (or dividing) both quantities in the ratio by the same value to find an equivalent ratio.

A ratio table can help you find equivalent ratios in order to solve problems.

If a straight line passing through the origin has same ratios or which has same slope at all points.

Hence, ratio table can help you find equivalent ratios in order to solve problems.

To learn more on Ratios click:

https://brainly.com/question/1504221

#SPJ5

Answer:

100°

Step-by-step explanation:

x-20+x = 180 ( Supplementary angles)

2x-20=180

2x=200

×=100

x is the larger angle , x=100°

Answer: 3,048 inches

Step-by-step explanation:

First, add the lengths of the two sides given.

1,412 + 1,112 = 1,524

Now, remember these are only two sides.

You have to multiply by 2 to get the total.

1,524 x 2 = 3,048

Answer = 3,048