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Dovator [93]
3 years ago
10

2. Which expression is equivalent to 3x(-4x² + 5x - 8) - 6(x² - 5x + 7)?

Mathematics
1 answer:
adoni [48]3 years ago
5 0
It is answer choice B. Using the distributive property, -12x^3+15x^2-24x-6x^2+30x-42. Then combine like terms.
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Suppose that P(n) is a propositional function. Determine for which improper subset of the domain of n the statement P(n) must be
Alinara [238K]

Answer:

a) P(n) is true for all 'n' in the set ; { 0,2,4,6,8 ….. }

b) P(n) is true for all 'n' in the set ; { 0,1,2,3,4,5 ............ }

Step-by-step explanation:

a) As P(0) is true

we will assume that

  • P(2) is true
  • P(4) is true
  • P(6) is true

this simply means  that ;  P(n) is true for all 'n' in the set

{ 0,2,4,6,8 ….. }

b) since P(0) and P(1) are true

we will assume that

  • P( 0+2 ) = P(2)  is true

also P(1) and P(2) are true

we will assume that

  • P(1+2) = P(3)  is true

Also from the previous answers it can be seen that P(2) + P(3) is true

we will assume

  • P(2+2) = P(4)  is true

This simply means that P(n) is true for all 'n' in the set

{ 0,1,2,3,4,5 ............ }

8 0
2 years ago
6.48> 6.4_1> 6.470 whats the unknown digit to make the statement true
Triss [41]
The unknown digit is 7 because 6.471 is greater than 6.470 and less than 6.48.
8 0
3 years ago
Hurry pleaseeeeeeeeeeeeeeeeeeeeeee
Setler [38]

Answer:27

Step-by-step explanation:

7 0
2 years ago
Find the factors that multiply to give you -42 and add to give you -1.
Schach [20]
-7 and positive 6. if you multiply a negative by a positive it will always be a negative.
3 0
3 years ago
Ms. Canton has a book case. On three of the shelves there are the same amount of books. On another shelf there are four of her f
andrey2020 [161]

Answer:

y = 3x + 4

Step-by-step explanation:

According to the given question, the expression to represent all the books in Ms. Canton's bookcase is shown below:-

y indicates the total amount of books

x indicates the equal cost of books on 3 bookshelves

while

+4 indicates 4 other books on the fourth bookshelf

So, the expression will be

y = 3x + 4

Therefore the correct answer is y = 3x + 4

3 0
3 years ago
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