3 years ago

Calculate the discriminant and use it to determine how many real-number roots the equation has.

Mathematics

1 answer:

vfiekz [6]3 years ago

8 0

The answer should be two real number roots

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Andrej [43]

Answer:

3/18 or 1/9

Step-by-step explanation:

2/3 divided by 6 = ?

2 1 3

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3 6 18

3/18

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mariarad [96]

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What is the solution of the system of equations? 3x + 6y = –2 15x + 30y = –10

cestrela7 [59]

3x + 6y = -2......multiply by -5
15x + 30y = -10
--------------------
-15x - 30y = 10 (result of multiplying by -5)
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3 years ago

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A direct variation exist between x and y. When x=4, y=3. What is the value of y when x=10

scoray [572]

Answer:

$y = 7.5$

Step-by-step explanation:

Given

Direct variation implies that:

$y = kx$

Where k is the constant of variation.

$x=4; y=3$

Required

Find y when $x = 10$

$y = kx$

Make k the subject

$k = \frac{y}{x}$

For: $x=4; y=3$

$k = \frac{3}{4}$

For: $x = 10$

$k = \frac{y}{x}$ becomes

$k = \frac{y}{10}$

Substitute $k = \frac{3}{4}$

$\frac{3}{4} = \frac{y}{10}$

Make y the subject

$y = \frac{3}{4} * 10$

$y = \frac{3* 10}{4}$

$y = \frac{30}{4}$

$y = 7.5$

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3 years ago

(20 x 1) + ((20-1) x 2) + (20-2)

olya-2409 [2.1K]

The answer:

Is 76

Yas!!!

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3 years ago