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2 years ago

7

Which ordered pair is a solution to the equation y=4-6x?

1 answer:

Alex777 [14]2 years ago

7 0

Answer:

the answer to this is b( 2,-8)

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Complete the square on the following quadratic x^2+18x+7=0 what value is added to both sides of the equation.

Alexandra [31]

X^2 + 18x + 7 = 0
x^2 + 18x = -7
x^2 + 18x + 81 = -7 + 81....add 81 to both sides
(x + 9)^2 = 74
x + 9 = sqrt 74
x = -9 (+-) sqrt 74

x = -9 + sqrt 74
x = -9 - sqrt 74

the reason u add 81 to both sides.....u take half of the x term, then square it.
half of 18 is 9....9^2 = 81

7 0

2 years ago

Solve x - 4 + 6 = 13 please help ASAP

White raven [17]

Answer:

C. x = 11 and x= -11

Step-by-step explanation:

x-4 +6 = 13

x + 2 = 13

x = 13 -2

x= 11

6 0

2 years ago

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Sorry my brain a bit dumb, I need someone more brainly to solve this

DerKrebs [107]

I hope my ans is correct!! used some algebra here but yea i hope its still comprehensible!

4 0

2 years ago

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What does rationalize mean?

Lisa [10]

Answer:

it means moving the square root thats in the bottom of the fraction (the denominator) to the top of the fraction (the numerator)

Step-by-step explanation:

For example:

$\frac{4}{\sqrt{x}}$ × $\frac{\sqrt{x} }{\sqrt{x} }$ = $\frac{4\sqrt{x} }{x}$

6 0

2 years ago

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Write the quadratic equation whose roots are six and -2 and who’s leading coefficient is 3 use the letter X to represent the var

Artist 52 [7]

Answer:

$3X^{2} - 12X - 36 = 0$

Step-by-step explanation:

6 and - 2 are the only two solutions to the required quadratic equation.

So, if the variable is represented by X then (X - 6) and (X + 2) will be the only two factors of the polynomial function.

Therefore, the equation is

(X - 6)(X + 2) = 0

⇒ $X^{2} - 4X - 12 = 0$

If the leading coefficient of the equation is 3 then we can write the equation as $3X^{2} - 12X - 36 = 0$ (Answer)

6 0

2 years ago