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xxMikexx [17]
2 years ago
7

Factor: -12n – 20 -4 (3n - 5) 4 (3n + 5) -4 (3n+5) 4 (3n – 5) Done

Mathematics
1 answer:
Ghella [55]2 years ago
7 0

Answer:

−4(3n+5)

the answer is the third one

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In Andrew’s Furniture Shop, he builds bookshelves and tables. Each type of furniture takes him about the same time to make. He f
olasank [31]
Given:
Cost to build a bookshelf = $20
Cost to build a table = $45
Amount available to spend = $600

Let x =  number of bookshelves built.
Let y =  number of tables built.

The total number of bookshelves and tables =  18.
Therefore
x + y = 18.
 That is,
 y = 18 - x                    (1)

The total amount available to build x bookshelves and y tables = $600. Therefore
20x + 45y = 600
That is (dividing through by 5),
4x + 9y = 120            (2)

Substitute (1) into (2).
4x + 9(18 - x) = 120
4x + 162 - 9x = 120
-5x = -42
  x = 8.4
From (1),obtain
 y = 18 - 8.4 = 9.6

Because we cannot have fractional bookshelves and tables, we shall test values of x=8, 9 and y=9,10 for profit

Note: The profit is $60 per bookshelf and $100 per table.
If x = 8, then y = 18-8 = 10.
The profit = 8*60 + 10*100 =  $1480

If x = 9, then y = 18-9 = 9.
The profit = 9*60 + 9*100 = $1440

The choice of 8 bookshelves and 10 tables is more profitable.

Answer: 8 bookshelves and 10 tables.
5 0
3 years ago
Please help if know the answers
klio [65]

Answer:

2x-3

x =3 /2

and second one is -y+2

= -2/1

-2

6 0
2 years ago
What is the change in elevation from -6 km to -14 km?
Feliz [49]

Answer:

-8 km

Step-by-step explanation:

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3 years ago
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Elena L [17]

Answer:

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Step-by-step explanation:

y = 3x + 9

y = -3x + 12

y=21

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2 years ago
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Find the output for each input of y = -2x.
VashaNatasha [74]
The 2nd choice down in correct.
4 0
3 years ago
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