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3 years ago

X2 + 9x + 2 = 0 has how many real solutions

Mathematics

2 answers:

Nonamiya [84]3 years ago

6 0

Answer:

1. it is x=-2/11

Step-by-step explanation:

mestny [16]3 years ago

6 0

Answer:

Step-by-step explanation:

hello :

x² + 9x + 2 = 0

∆ =b²- 4ac when : a =1 and b=9 and c=2

∆ =b²- 4ac = (9)²-4(1)(2) =81-8 = 73

∆ >0 two reals solutions......

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Answer:

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3 years ago

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3 years ago

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Find the magnitude and direction in degrees of the vector v=6i+2 seq31

masha68 [24]

Answer:

Please check the explanation.

Step-by-step explanation:

Given the vector

v = 6i + 2√3j

The Magnitude of a vector:

$\mathrm{Computing\:the\:Euclidean\:Length\:of\:a\:vector}:\quad \left|\left(x_1\:,\:\:\ldots \:,\:\:x_n\right)\right|=\sqrt{\sum _{i=1}^n\left|x_i\right|^2}$

$=\sqrt{6^2+\left(2\sqrt{3}\right)^2}$

$=\sqrt{36+12}$

$=\sqrt{48}$

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The Direction of a vector:

tan Ф = y/x

y=2√3

x = 6

tan Ф = y/x

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= √3 / 3

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2 years ago

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DerKrebs [107]

Answer:

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2 years ago

HELP image is provided

Hitman42 [59]

Answer:

yes

Step-by-step explanation:

angles z and b both have 2 congruent lines

angle y and a have one congruent line

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2 years ago