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Likurg_2 [28]
3 years ago
8

Please!!!! HELP ME!! I give brainlyest!!! are u my friend? The table below models the cost, y, of using a high-efficiency washin

g machine and a standard washing machine over x number of years. Which equation represents the cost of the high-efficiency washing machine over a given number of years? Which equation represents the cost of the standard washing machine over a given number of years? After how many years of use would the washing machines cost the same amount? Which washing machine would be the more practical purchase if kept for 9 years? ugh...
Mathematics
1 answer:
horsena [70]3 years ago
5 0

Answer:

y= 25x+500

y=30x+400

20

standard machine

Step-by-step explanation:

just did it on edge!! :D

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gia is thinking of a number which she calls n. She adds 4 to the number and then doubles the sum. Write an expression to represe
Korvikt [17]
It should be 2(n+4)
3 0
3 years ago
Read 2 more answers
Drag each number to the correct location on the table. Each number can be used more than once, but not all numbers will be used.
muminat

Answer:

1. 12x^2-13.4x-11

- Degree: 2

- Number of terms: 3

2. 7x^3+168

 - Degree: 3

- Number of terms: 2

3. 9x^4-9

- Degree: 4

- Number of terms: 2

Step-by-step explanation:

For this exercise you need to remember the multiplication of signs:

(+)(+)=+\\(-)(-)=+\\(-)(+)=-\\(+)(-)=-

1. Given:

(4x + 2.2)(3x - 5)

Apply the Distributive property:

=12x^2+6.6x-20x-11

Add the like terms:

=12x^2-13.4x-11

You can idenfity that:

- Degree: 2

- Number of terms: 3

2. Given:

(-304 +503 - 12) + (7x^3 - 25 + 6)

Add the like terms:

=187 + 7x^3 - 25 + 6=7x^3+168

You can idenfity that:

- Degree: 3

- Number of terms: 2

3. Given:

(3x^2 - 3)(3x^2 + 3)

Apply Distributive property:

=9x^4-9x^2+9x^2-9

Add the like terms:

=9x^4-9

You can idenfity that:

- Degree: 4

- Number of terms: 2

8 0
3 years ago
1/2(-4+6n)=1/3n+2/3(n+9)
azamat

The correct answer is n=4:)

3 0
3 years ago
Read 2 more answers
Which of the following is an arithmetic sequence?
Arada [10]
A is the correct answer I just did that one too twins!
7 0
3 years ago
Please help I need to finish Alex before the school day ends, 30 points.
Mariana [72]

Answer:

308 m square

Step-by-step explanation:

divided the solid to two.

1. 4*5*7= 140

2. 7*4*6= 168

140+168=308

8 0
3 years ago
Read 2 more answers
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