3 years ago

Help ASAP!!!!!!!!!!!!!!!! 25 points

1 answer:

3 0

Answer: range is 4, mode is one because you can also think of mode as the most popular, median is the one in the middle and that would be 2, and mean would be 4.5 your welcome

Step-by-step explanation:

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If three times a number is increased by 4, the result is -8. Determine the number.

Natali [406]

Answer:

Step-by-step explanation:

let the number is x

3x+4=-8

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3 years ago

Solving quadratic equation using the completing method.<br>(a).x^2+6x+1=0

irina1246 [14]

Answer:

$x = -3 + 2\sqrt2 \ , \ x = -3 - 2\sqrt2$

Step-by-step explanation:

x² + 6x + 1 = 0

a = 1 , b = 6 , c = 1

$x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}\\\\x = \frac{-6 \pm \sqrt{36-4}}{2}\\\\x=\frac{-6 \pm \sqrt{32}}{2}\\\\x= \frac{-6 \pm \sqrt{16 \times 2}}{2}\\\\x = \frac{-6 +4\sqrt2 }{2}\\\\x = -3 + 2\sqrt2 \ , \ x = -3 - 2\sqrt2$