3 years ago

Find the area of the right triangle. If necessary, round to the nearest tenth.

1 answer:

Archy [21]3 years ago

3 0

Answer:

There is information missing from this question. Cannot be answered in its current form.

Step-by-step explanation:

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telo118 [61]

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kotegsom [21]

Answer:

k = +10 or -10

Step-by-step explanation:

It's given in the question that the roots of the eqn. are real and equal. So , the discriminant of the eqn. should be equal to 0.

$= > {b}^{2} - 4ac = 0$

$= > {( - 2k)}^{2} - 4 \times 5 \times 20 = 0$

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

$= > 4( {k}^{2} - 100) = 0$

$= > {k}^{2} - 100 = 0$

$= > k = \sqrt{100} = + 10 \: or \: - 10$

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NikAS [45]

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