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3 years ago

Calculate (9.9x10^8) + (5.5x10^6) give the answer in standard form and show working out

1 answer:

6 0

Move the decimal place over as many times as the number that ten is rooted by like it would be 990,000,000 + 5,500,000 = 995,500,000 or (if they want it in the form for future reference) 995.5×10^6

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20 Points! Help pls! !

lara31 [8.8K]

Well i think it 120 your welcome

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3 years ago

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Find all complex solutions of 7x^2-7x+3=0

Sedaia [141]

Answer:

The complex solutions are

$x = (\frac{7-\sqrt{35} i }{42} , ) x = \frac{7 + \sqrt{35} i }{42})$

Step-by-step explanation:

Step(i):-

Given equation 7 x² - 7 x +3=0

$x = (\frac{-b -\sqrt{b^{2}-4ac } }{2ac} , \frac{-b +\sqrt{b^{2}-4ac } }{2ac})$

Given standard equation

a x² +b x +c =0

a = 7 , b= -7 and c=3

Step(ii):-

$x = (\frac{-(-7) -\sqrt{(-7)^{2}-4(7)(3) } }{2(7)(3)} , \frac{-(-7) +\sqrt{(-7)^{2}-4(7)(3) } }{2(7)(3)})$

$x = (\frac{7-\sqrt{(49-84 } }{42} , \frac{7 +\sqrt{(49-84 } }{42})$

$x = (\frac{7-\sqrt{35i^{2} } }{42} , \frac{7 + \sqrt{35i^{2} } }{42})$

$x = (\frac{7-\sqrt{35} i }{42} , \frac{7 + \sqrt{35} i }{42})$

8 0

2 years ago

Ap:3, 2, 1.... what is its coomon difference

Nastasia [14]

Answer:

-1

Step-by-step explanation:

3-1=2

2-1=1

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1 year ago

Are 24 to 12 and 6 to 12 equal

Sauron [17]

Answer: False. From 24 to 12 is 2 divided but 6 to 12 is 2 multiplied. Hope this helps :)

Step-by-step explanation:

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3 years ago

. i will give brainliest.A man is 26 years older than his son. He is also 8 years older than three times his son’sage.

Shkiper50 [21]

Step-by-step explanation:

Let the son's age be x and man be y

y=26+x

y=8+3x

x=9

Son's age is 9

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3 years ago

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