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sleet_krkn [62]
3 years ago
8

Need help solving this

Mathematics
1 answer:
Kobotan [32]3 years ago
5 0

Answer:

A^C = {2,3,5,6,10,12,14,15,17,18,20}

B^C = {1,3,5,6,9,11,15,16,18,20}

C^C = { 5,9,10,15,16,20}

Step-by-step explanation:

The C means the complement or the items  in the main set and not in the subset

Given U = {1,2,3,4,5,......18,19,20}

A^C = means the items in U that are not in A

A^C = {2,3,5,6,10,12,14,15,17,18,20}

B^C = means the items in U that are not in B

B^C = {1,3,5,6,9,11,15,16,18,20}

C^C = means the items in U that are not in C

C^C = { 5,9,10,15,16,20}

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The gum you like is on sale. it is regularly priced at $1.59.
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Answer:

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Step-by-step explanation:

Here, s represents the sales price per pack and c represents the cost saving,

Also, the regular price per pack = $ 1.59,

Since,

Cost saving = Regular price - sales price

⇒ c = 1.59 - s

Which is the required equation that is used to determine how much money is saved if the pack is bought today.

3 0
3 years ago
Read 2 more answers
Find the probability of having 2,3, or 4 successes in five trials of a binomial experiment in which the probability of success i
Georgia [21]

Answer:

65.3%

Step-by-step explanation:

Binomial distribution PMF below (along with a description)

the probabilty of getting 2, 3, or 4 successes in 5 trials is just

p(2)+p(3)+p(4)

p(2)= 5C2*.4²*(1-.4)³ = .3456

p(3)= 5C3*.4³*(1-.4)²= .2304

p(4)= 5C4*.4⁴*(1-.4)=.0768

.3456+.2304+.0768= .6528

6 0
2 years ago
Tony is driving from alma ,Michigan to Elizabeth city, North Carolina . The drive covers a total distance of 1,100 miles. Tony c
Natalka [10]
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4 0
3 years ago
If three times a number minus 2 equals 13, what is the number?
Nana76 [90]
Change the messy words into numerals
3     times          a number         minus            2           equals         13
3          ×                n                     -                 2               =               13

3n - 2 = 13
take 2 to the other side
3n - 2 + (2)  = 13 + (2)
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Divide by 3 on either sides to isolate n
\frac{3n}{3} = \frac{15}{3}
3 and 3 cancels out

n = 5

check:
3 times 5 minus 2 equals 13
3     ×    5       -      2     =     13
15    -      2        =          13
13            =               13

The number is 5
3 0
3 years ago
If x+1/x=7,find x^2+1/x^2​
trapecia [35]

Answer:

x²+1/x² = 51

Explanation:

Given x - 1/x = 7 ---(1)

We know the algebraic identity:

a²+b²-2ab = (a-b)²

Or

a²+b² = (a-b)²+2ab

Now,

x²+1/x²

= (x-1/x)²+2*x*(1/x)

= (x-1/x)²+2

:7²+2 [ from (1)] =

= 49+2

= 51

Therefore,

x²+1/x² = 51

3 0
3 years ago
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