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Sholpan [36]
3 years ago
6

-2x^2+4x-1 from 6x^2+3x-9

Mathematics
1 answer:
kirza4 [7]3 years ago
4 0

Answer:

8{x}^{2}  - x   - 8

Step-by-step explanation:

We want to subtract

- 2 {x}^{2}  + 4x - 1

from

6 {x}^{2}  + 3x - 9

We set up the subtracttion problem to get:

6 {x}^{2}  + 3x - 9 - ( - 2 {x}^{2}  + 4x - 1)

We expand the parenthesis to get:

6 {x}^{2}  + 3x - 9  + 2 {x}^{2}   - 4x  + 1

Group similar terms:

6 {x}^{2}   + 2 {x}^{2} + 3x- 4x  + 1 - 9

We simplify to get:

8{x}^{2}  - x   - 8

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1 inch = 2 feet

Step-by-step explanation:

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2 years ago
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Using the rules of significant figures, what is the correct answer for the following mathematical equation?
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5 0
3 years ago
Christine has 28 jazz songs and classical songs on a playlist. The play list has 3 times as many jazz songs as classical songs.
Alborosie
I assume you mean the total number of jazz and classical songs combined is 28 songs?
3 times as many jazz as classical:
Means there is a ratio of 3 jazz to 1 classical, which means there are essentially 4 parts (3+1=4). So if we divide 28/4=7. This gives one part = number of classical songs, jazz is 3 parts so 7*3=21 jazz songs.
7 times as many rock as classical:
From above we know there are 7 classical songs. 7*7=49 rock songs.
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Rock=49 songs
4 0
3 years ago
Can someone please help me as soon as possible thanks
exis [7]
Left row 1. Supplementary 2.complementary 3 supplementary
Right row 1. Complementary 2 supplementary 3 supplementary
7 0
3 years ago
A rectangle's length is three times its breadth x metres. Write an expression
MA_775_DIABLO [31]

Answer:

1. Perimeter = 8x m

2. Area = 3x² m²

Step-by-step explanation:

From the question given above, the following data were obtained:

Breadth (B) = x m

Length (L) = 3B = 3x m

Perimeter (P) =?

Area(A) =?

1. Determination of the perimeter of the rectangle.

Breadth (B) = x m

Length (L) = 3x m

Perimeter (P) =?

P = 2(L + B)

P = 2(3x + x)

P = 2(4x)

P = 8x m

Thus, the perimeter of the rectangle is 8x m

2. Determination of the area of the rectangle.

Breadth (B) = x m

Length (L) = 3x m

Area(A) =?

A = L × B

A = 3x × x

A = 3x² m²

Thus, the area of the rectangle is 3x² m²

3 0
2 years ago
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