Which equation has the same solutions as x² + 6x - 7 = 0?

(x+3)²=16

Step-by-step explanation:

I'm gonna solve this equation by completing the square

 x²+6x-7 = 0 by Completing The Square

 Add  7  to both side of the equation :  

  x²+6x = 7

Now you take the coefficient of  x , which is  6 , divide it by two = 3 , and finally square it giving 9  

Add 9 to both sides of the equation :

x²+6x+9=7+9

(x+3)x(x+3)=(x+3)²

7+9=16

| (x+3)²=16 |

Now you square root both sides to get x+3=±4

x+3=+4 or x+3=-4

x+3=+4= -7

x+3=-4= 1

x= -7

x= 1

Hope this helps! Have an amazing day :)

x = 10.1

step-by-step explanation:

all of the angles of a tirangle add up to 180º

180 - 65 = 115 (since we already know the value of one angle)

(2x + 7) + (8x + 7) = 115

(combins like terms) 10x + 14 = 115

(isolate the variable subtract 14 from both sides): 10x = 101

(find the variable divide both sides by 10): x = 101/10

x = 10.1

answer

106 emergencies

step-by-step explanation: