3 years ago

The sum of the measures of Angle A and Angle B is 180°.

Mathematics

1 answer:

In-s [12.5K]3 years ago

4 0

Answer:

x=9

Step-by-step explanation:

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Find all complex solutions of 5x^2+5x+3=0.

oksian1 [2.3K]

Answer:

see explanation

Step-by-step explanation:

5x² + 5x + 3 = 0 ← in standard form

with a = 5 , b = 5 , c = 3

Solve using the quadratic formula

x = $\frac{-b+/-\sqrt{b^2-4ac} }{2a}$

= $\frac{-5+/-\sqrt{5^2-(4(5)(3)} }{2(5)}$

= $\frac{-5+/-\sqrt{25-60} }{10}$

= $\frac{-5+/-\sqrt{-35} }{10}$

= $\frac{-5+/-\sqrt{-1(35)} }{10}$

= $\frac{-5+/-i\sqrt{35} }{10}$

Then

x = $\frac{-5}{10}$ ± $\frac{1}{10}$ i $\sqrt{35}$ , that is

x = - $\frac{1}{2}$ - $\sqrt{x} \frac{1}{10}$ i $\sqrt{35}$ , - $\frac{1}{2}$ + $\frac{1}{10}$ i $\sqrt{35}$

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3 years ago

Solve for r. k=3r-7s

const2013 [10]

R=7s/3+k/3

Hope this helps!

5 0

3 years ago

NO EXPLANATION NEEDED

Degger [83]

10/2 so 5 for 53, 10/4 so 5/2 or 2.5 for 54, and 10/3 or 3.333. For simplicity i divided everything by 10 to remove an extra zero but the answers would still be the same after you reduced

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3 years ago

Number 15 please help

OverLord2011 [107]

I would believe its 10

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3 years ago

How many students were enrolled by the end of the fourteenth century at the university of salamanca?

zmey [24]

There were about 500 to 600 students that attended the University of salamanca by the end of the 14th century

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3 years ago