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Ivahew [28]
3 years ago
8

2x^2+8x=x-3x^2 I will mark brainiest

Mathematics
2 answers:
Elden [556K]3 years ago
6 0

Answer:

x=0,x=-1.4

Step-by-step explanation:

2 {x}^{2}  + 8x - x + 3 {x}^{2}  = 0 \\ 5 {x}^{2}  + 7x = 0 \\ x(5x + 7) = 0 \\ x = 0 \\  \\ 5x + 7 = 0 \\ x =  -  \frac{7}{5}  =  -\frac{140}{100}  = -1.4

vesna_86 [32]3 years ago
3 0

Answer:

(0,-7/5)

Step-by-step explanation:

2x^2+8x=x-3x^2

2x^2+3x^2=x-8x

5x^2=-7x

5x^2+7x=0

x(5x+7)=0

x=0 or x=-7/5

solution set is (0,-7/5)

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Adam has joined a book club. The membership has an initial fee of $25.00 and each book rental costs $2.00. This table shows the
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Do you have a screenshot of the table? I’m struggling to visualise it with the data given.

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Jake earns $12 for each hour worked. The equation y = 12x can be used to model this situation, where x represents the number of
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<h2><em>Spymore</em></h2>
7 0
3 years ago
A
aleksandr82 [10.1K]

Answer:

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Step-by-step explanation:

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5 0
3 years ago
Drag numbers to the table so it shows a proportional relationship between x and y.
dezoksy [38]

Answer:

7.5         30

45         180

Step-by-step explanation:

The given line has x = 1.25 and y = 5.

y/x = 5/1.25 = 4

x is multiplied by 4 to get y since 1.25 * 4 = 5.

That means the equation is

y = 4x

For a proportional function, every value of x must be multiplied by 4 to get y.

x = 7.5

y = 4x = 4(7.5) = 30

7.5          30

We need to find the values for the last line.

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13.75 * 4 = 55

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There is no 70

30 * 4 = 120

There is no 120.

45 * 4 = 180

There is a 180.

45         180

Answer:

7.5         30

45         180

8 0
2 years ago
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