3 years ago

Which equation has x=3 as a solution?

1 answer:

3 0

Can you post the picture please? I’ll help you!

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vichka [17]

Answer:

Step-by-step explanation:

Key to this method is remembering that

$(a+b)^2 = a^2 + 2ab + b^2$

So, if you divide the coefficient of x by 2 and square it, that will complete the square. With that in mind, things are easy.

6/2 = 3, so add $3^2 = 9$

$x^2+6x+9 = (x+3)^2$

So, c=9

Similarly, for the other two,

$c = (\frac{-34}{2} )^2 = (-17)^2 = 289$

You don't really have to worry about the sign, since squaring will always make it positive

$(\frac{25}{13}) ^2 = \frac{625}{169}$

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3 years ago

frozen [14]

A C & D If The Air Quality Was Tested .

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3 years ago

ivann1987 [24]

xy−5=k Flip the equation. k=xy−5
Answer is k=xy−5
I hope this helps

6 0

3 years ago

grigory [225]

Answer: 1/6

Step-by-step explanation: ok, so he had mowed 1/3 of a field in 2 hours. Take 1/3 and divide by 2 hours to get 1/6

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3 years ago

Anna007 [38]

Answer:

C 20 miles per gallon.

Have a blessed day

5 0

3 years ago