1 year ago

Nancy pulled a number of colored balls from a bag and recorded the results.

Mathematics

1 answer:

sashaice [31]1 year ago

6 0

C) 13

Step-by-step explanation:

you should expect 13 to be green

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Find all complex solutions of 2x^2+3x+5=0 using the quadratic equation.

katrin2010 [14]

2x^2 + 3x + 5 = 0
a = 2 b = 3 and c = 5
x = [-b +-sq root(b^2 -4ac)] / 2a
x = [-3 +-sq root(9 -4*2*5)] / 4
x = [-3 +-sq root(9 - 40)] / 4
x = -(3 / 4) + sq root (-36) / 4
x = -(3 / 4) - sq root (-36) / 4

7 0

2 years ago

Reference angle for -19pi/6?

kow [346]

$\bf \cfrac{19}{6}\implies 3+\cfrac{1}{6}
\\ \quad \\\\
\cfrac{-19\pi }{6}\implies -\left(3\pi +\cfrac{1\pi }{6} \right)\impliedby clockwise
\\ \quad \\\\
or\implies -\left(2\pi +\pi +\cfrac{\pi }{6} \right)$

go that much "clockwise", you'll end up at the 2nd quadrant,
the reference angle, is its reflective angle on the 1st quadrant