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Nadusha1986 [10]
3 years ago
6

Can you help this this question 40 points

Mathematics
2 answers:
Levart [38]3 years ago
5 0

Answer:

1. Equation 1

2. -2x-3(6x-11)=-7

3. x=2

4. y=1

5. (2,1)

Scilla [17]3 years ago
4 0

Do you need this in a graph form?

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For which positive integer values of $k$ does $kx^2+20x+k=0$ have rational solutions? Express your answers separated by commas a
Musya8 [376]

Answer:

-10,10

Step-by-step explanation:

The given quadratic equation is

k {x}^{2}  + 20x + k = 0

The discriminant of this equation is given by;

D =  {b}^{2}  - 4ac

where a=k, b=20, c=k

For rational solutions, the discriminant must be zero.

{20}^{2}  - 4 \times k \times k = 0

Simplify to get:

400 - 4  {k}^{2}  = 0

This implies that:

400  = 4  {k}^{2}

100 =  {k}^{2}

Take square root to get:

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