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frosja888 [35]
3 years ago
5

At a high school, students can choose between three art electives, four history electives, and five computer electives. Each stu

dent can choose two electives.
What is the approximate probability that a student chooses a computer elective and an art elective?
Mathematics
1 answer:
KatRina [158]3 years ago
3 0
2 out of 12 is the answer
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Which expression is represented by the phrase "the square of y decreased by the quotient of 28 and 7"?
padilas [110]

Answer:

y^2-(28/7)

or, y^2-(4)

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3 years ago
If S is countable and nonempty, prove their exist a surjection g: N --> S
aleksley [76]

Answer with Step-by-step explanation:

We are given S be any set which is countable and nonempty.

We have to prove that their exist a surjection g:N\rightarrow S

Surjection: It is also called onto function .When cardinality of domain set is greater than or equal to cardinality of range set then the function is onto

Cardinality of natural numbers set =\chi_0( Aleph naught)

There are two cases

1.S is finite nonempty set

2.S is countably infinite set

1.When S is finite set and nonempty set

Then cardinality of set S is any constant number which is less than the cardinality of set of natura number

Therefore, their exist a surjection from N to S.

2.When S is countably infinite set and cardinality with aleph naught

Then cardinality of set S is equal to cardinality of set of natural .Therefore, their exist a surjection from N to S.

Hence, proved

8 0
3 years ago
-5x + 7 + 2x - 3<br><br> Simplify
Zielflug [23.3K]

Answer:

−3x+4

Step-by-step explanation:

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3 years ago
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5 weeks = how many days???
scZoUnD [109]

Answer: 35 days

Step-by-step explanation:

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3) k(a)= a + 4; Find K(0) ; k(2x - 7)
Westkost [7]

Answer: k(0) = 4; k (2x - 7) = 2x -3

Step-by-step explanation:

If k(a) = a + 4

K(0) will be 0 + 4

K(0)= 4

Then, k (2x - 7) = 2x -7 +4

K (2x - 7) = 2x - 3

3 0
3 years ago
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