Rewrite the equation by completing the square x^2 + 14x + 49 = 0

(X + [ ] )^2 = [ ]

-7,1

Step-by-step explanation:

x^2+14x+49=0

x^2+14x/2=0-49

x^2+7x=-49

x^2+(7x)²=-49+49

x²+7x²=0

(x+7x)²=0

√(x+7x)²=0

x+7=0

x=-7,1

step-by-step explanation:

use pothagarean therom

a^2+b^2=c^2 so first ac

acm is a right triangle because c= 90°

and am (the hypotenuse or c) =16+9 =25

but there is not enough info we need another angle or side length

answer: c.  

step-by-step explanation:

mixtures containing substances that get attracted to magnet can be separated using a magnet. we can separate iron from a mixture of sand and iron, as only iron attracts to the magnet.