Step-by-step explanation: pluging in -b/2a for first equation you get 3 plunging 3 in you get 6 solving for second equation you get -x^2+6x+3 pluging in -b/2a you get 3 then plugoing into equation you get 12 12-(-6)=18

8 0

4 years ago

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Rationalise 2 divided by 2 square root 3

ElenaW [278]

Answer:

$\displaystyle \frac{\sqrt{3}}{3}$

Step-by-step explanation:

$\displaystyle \frac{2}{2\sqrt{3}} = \frac{1}{\sqrt{3}} = \boxed{\frac{\sqrt{3}}{3}}$

I am joyous to assist you at any time.

5 0

3 years ago

A car dealership decreased the price of a certain car by 4% . The original price was $43,600 . write the new price in terms of t

defon

Answer: The new price of the car is $41856

Step-by-step explanation:

So we know the the original price as 43,600 which is 100% and is being dropped by 4% so you would have to subtract 4% from a 100% and multiply it by the original price.

100% - 4% = 96%

Now 96% of the original price is the new price.

96% * 43,600= ?

0.96 * 43,600 = 41856

6 0

3 years ago