Answer:
x= -2-√11. or. x= -2 + √11
Step-by-step explanation:
solving quadratic equation by completing the square
x^2+4x-7=0
x^2+4x=7
x^2+4x + (4/2)^2=7 + (4/2)^2 ( adding (1/2 coefficient of x)^2 on both sides
x^2+4x + 4=7 + 4
x^2+4x + 4=11. factorize(x^2+4x + 4) into (x + 2)^2
(x + 2)^2=11
√(x + 2)^2= + - √11
x + 2 = + - √11
there are two different solution .
x + 2 = -√11. or x + 2 = + √11.
x= -2-√11. or. x= -2 + √11.
Answer:
About 40% of students own a cat
Step-by-step explanation:
Answer:
<u>The answer is 2 3/4</u>
<u>If you simplify 2 3/4 then its 5/6</u>
<u></u>
<u>Hope this helps</u>
Answer:
Step-by-step explanation:
area formula is
π
plug in values:
9π
which equals
28.2743339
or you can write 9π im not sure what your teacher prefers
circumference formula is
2πr
which equals
6π
or
18.8495559
Combine like terms
So
<span>8x + -7y
Or for you it'll be B
:)</span>