3 years ago

If 3x + 8 =5x, then 13x =?

Mathematics

2 answers:

eimsori [14]3 years ago

5 0

Answer:

13* 4= 52

Step-by-step explanation:

x=4 so ... 13*4= 52

fgiga [73]3 years ago

5 0

MARK AS BRAINLIEST

Answer:

the answer is .52

Step-by-step explanation:

13 x 4= 52

x=4 s

13*4= 52

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4 years ago

Select the two values of x that are roots of this equation. x + 2x - 6 = 0

VLD [36.1K]

For this case we must solve the following quadratic equation:

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$a = 1\\b = 2\\c = -6$

The solution is given by:

$x = \frac {-b \pm \sqrt {b ^ 2-4 (a) (c)}} {2a}$

Substituting:

$x = \frac {-2 \pm \sqrt {2 ^ 2-4 (1) (- 6)}} {2 (1)}\\x = \frac {-2 \pm \sqrt {4 + 24}} {2}\\x = \frac {-2 \pm \sqrt {28}} {2}\\x = \frac {-2 \pm \sqrt {2 ^ 2 * 7}} {2}\\x = \frac {-2 \pm2 \sqrt {7}} {2}\\x = -1 \pm \sqrt {7}$

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$x_ {1} = - 1+ \sqrt {7}\\x_ {2} = - 1- \sqrt {7}$

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4 years ago