Given that B = {1, 2, 3, 4}, how many subsets have exactly two elements?

Answers

Answer 1
Answer:

The answer is 6

There are 6 subsets that have exactly two elements

Answer 2
Answer:

Answer:

6

Step-by-step explanation:

{1,2}     {2,1}     {3,1}     {4,1}

{1,3}     {2,3}    {3,2}     {4,2}

{1,4}     {2,4}     {3,4}    {4,3}

Remove duplicates {2,1}, {3,1}, {4,1}, {3,2}, {4,2}, {4,3}

Final Answer = 6 subsets remain


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A local bowling alley charges $3 per game, plus $5 to rent a pair of shoes. Write an algebraic expression that models the cost of renting one pair shoes and bowling g games.

Pls help its the last question

Answers

Answer:

I believe the answer is -60

Step-by-step explanation:

A pair of sneakers costs $46.99. You have a coupon for 15% off. What is the total cost of the sneakers after 5% sales tax is included?

Answers

Answer:

The cost of the sneakers after the coupon is applied would be $46.99 - ($46.99 * 15%) = $39.94.

The total cost of the sneakers after 5% sales tax is included would be $39.94 + ($39.94 * 5%) = $41.94

Answer: $41.94

15% off means the sneakers are at 85% of it's original price.

85% = 0.85

$46.99 x 0.85

= $39.94 after 15% coupon

5% sales tax means you are adding 5% to the price.

105% = 1.05

$39.94 x 1.05

$41.94, after the coupon and sales tax.

Simplify 0.75(3.5a-6b)

Answers

-15/8 is the answer when you simplify

the length of the base of a triangle is twice its height. if the area of the triangle is 4 square kilometers, find the height

Answers

The height of the triangle is 2 kilometer.

A triangle is a 3-sided polygon. The sum of the angles in a triangle add up to 180 degrees. The sides of a triangle are the length, base and the hypotenuse.

The area of a triangle = (1)/(2) × base × height

Let:

t represent the height of the triangle.

Base = 2 x t = 2t

Area = 4

4 =  (1)/(2) × 2t x t

Multiply both sides of the equation by 2

8 = 2t²

Divide both sides by 2

4 = t²

Find the square root of both sides of the equation

t = 2 kilometer.

To learn more, please check: brainly.com/question/24865193?referrer=searchResults

let the height = x

Base = 2x

Area of triangle = (1/2)*base*height

Area = (1/2)*2x*x = 4 

x² = 4

x = √4

x = 2

Height = 2 km.

some one plz help What is the difference? 1/6 - 5/8 a. -19/24 b - 11/24 c. 11/24 d. 2

Answers


1/6-5/8

= (8-30)/48

= -22/48

= -11/24 which is b

the answer i would say is b sorry i took so long

-3(4x+2)=18 WHAT IS IT????

Answers

Answer:

x = -2

Step-by-step explanation:

-3(4x + 2) = 18

Divide by -3:

-3(4x + 2) / -3 = 18 / -3

4x + 2 = -6

Subtract 2:

4x + 2 - 2 = -6 - 2

4x = -8

Divide by 4:

4x / 4 = -8 / 4

x = -2