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castortr0y [4]
3 years ago
15

I need help now, please. Please explain also. Thanks!

Mathematics
1 answer:
Slav-nsk [51]3 years ago
4 0

Answer:

C)-1

Step-by-step explanation:

You can not spend a negative hour playing golf.

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Suppose A= {5,6,8,10,12} and B= {8,9,12,13,14} <br><br><br><br> What is AunionB?
earnstyle [38]

Answer:

A ∪ B = {5 , 6 , 8 , 9 , 10 , 12 , 13 , 14}

Step-by-step explanation:

The symbol of union is ∪

The symbol of intersection is ∩

In the sets A and B

A ∪ B means all elements in sets A and B without repeating

A ∩ B means the common elements in sets A and B

n(A ∪ B) = n(A) + n(B) - n(A ∩B), where n is the number of elements in the set

Now let us solve the question

∵ Set A = {5 , 6 , 8 , 10 , 12}

∴ n(A) = 5

∵ Set B = {8 , 9 , 12 , 13 , 14}

∴ n(B) = 5

The elements 8 and 12 are in the two sets

∵ There are two common elements in the two sets 8 and 12

∴ n(A ∩ B) = 2

Use the 3rd rule above to find how many elements in A ∪ B

∵ n(A ∪ B) = 5 + 5 - 2

∴ n(A ∪ B) = 8

∴ The set of A ∪ B has 8 elements

∵ A ∪ B means all elements in A and B without repeating

∴ A ∪ B = {5 , 6 , 8 , 9 , 10 , 12 , 13 , 14}

4 0
3 years ago
Please help if the value of (x+1)^2-3 is 22 what is the value of (x+1)^2-5
Finger [1]
We could solve for x, but notice that the same expression is being squared in both (x+1)

if (x+1)^2 - 3 = 22 then
  (x+1)^2 = 25

that would mean that (x+1)^2 - 5 = 25 - 5 = 20


7 0
3 years ago
Help me its easy lol
jeka57 [31]

Answer:

265 BOXES    /4 BOTTLES WILL BE WITHOUT BOXES

Step-by-step explanation:

I SUBTRACTED 2136 FROM 8500. IT GAVE ME 6364. THE I TRIED TO DEVIDE BY 24 BECUASE ITS THE NUMBER OF BOTTLES IN A BOX. IT GAVE A MIXED NUMBER WICH IS 265.16 TERMINATING. I TRIED TO DEVIDE 6360 INSTAID OF 6364 AND IT GAVE 265 AND THE REMAINDER WAS 4.

WELCOM

3 0
3 years ago
Your DVD membership costs $16 per month for 10 DVD rentals. Each additional DVD rental is $2. a. Write an equation in two variab
Anarel [89]

Answer:

a. C(x) = $16, if 0 ≤ x ≤ 10

   C(x) = 2x - 4 if x > 10

b. Independent: Number of DVD rentals

   Dependent: Monthly cost of rentals

c. $26

Step-by-step explanation:

a. The cost (C) of renting 'x' DVDs is given by:

If 10 ≤ x ≤ 10

C(x) = $16

If  x > 10

C(x) = 16 + 2(x-10)

C(x) = 2x - 4

b. Since the cost depends on the number of DVD rentals, cost is the dependent variable and number of DVD rentals is the independent variable.

c. For x = 15:

C(15) = 2*15 - 4

C(15) = $26

It costs $26 to tent 15 DVDs in one month

5 0
3 years ago
1.) Your 3 year investment of $20,000 received 5.2% interested compounded semi annually. What is your total return? ASW
Stella [2.4K]

Let's begin by listing out the information given to us:

Principal (p) = $20,000

Interest rate (r) = 5.2% = 0.052

Number of compounding (n) = 2 (semi annually)

Time (t) = 3 years

The total return is calculated as shown below:

A = p(1 + r/n)^nt

A = 20000(1 + 0.052/2)^2*3 = 20000(1 + 0.026)^6

A = 20000(1.1665) = 23,330

A = $23,330

4 0
1 year ago
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