Solve the equation using multiplication or division-13=m -5

Mathematics

1 answer:

Lelechka [254]3 years ago

6 0

is the question set up -13=m-5 or....

You might be interested in

I need help solving #9 & #11! It's geometry but I'm just really stuck<br><br>

Vikentia [17]

Answer:

9)x=11 y=3

11)x=18 y=5

Step-by-step explanation:

9) 9x+25=13x+19 13x-19+17y+5=180

9x+44=13x 129+17y=180

44=4x 17y=51

11=x y=3

11) 49+3x=7x-23 3x=11y-1

7 0

3 years ago

Katie solved the equation by completing the square. X2+12x−7=0 which equation shows one of the steps katie could have taken to c

sdas [7]

solution:

$x^{2}+12x-7=0\\add 7 to both side of the equation\\x^{2}-12x=7\\to creat a trinomial square on the left side of the equation.\\find a value that is equal to the square of b and the cofficent of x.\\(\frac{b}{2})^2=(-6)^2\\add the term to each side of the equation\\x^2-12x+(-6)^2=7+(-6)\\x^2-12x+36=43\\(x-6)^2=43\\solve the equation for x.\\$ $take the square root of each side of the equation to the set up the solution x,\\(x-6)^2.\frac{1}{2}=\pm \sqrt{43}\\x-6=\pm \sqrt{43}\\x=6\pm \sqrt{43}$