Answer:
x = 2±sqrt(11)
Step-by-step explanation:
x^2 -4x - 7 =0
Add 7 to each side
x^2 -4x -7+7 =0+7
x^2 -4x =7
To complete the square take the coefficient of the x term and divide by 2 and then square it. Add it to both sides
-4 /2 = -2 then square
(-2)^2 = 4
Add 4 to both sides
x^2 -4x+4 =7+4
x^2 -4x+4 = 11
Factor the left side into (x-b/2)^2
(x-2)^2 =11
Take the square root of each side
sqrt((x-2)^2) =±sqrt(11)
x-2 = ±sqrt(11)
Add to to each side
x-2+2 = 2±sqrt(11)
x = 2±sqrt(11)
Answer:
![\frac{10}{63}](https://tex.z-dn.net/?f=%5Cfrac%7B10%7D%7B63%7D)
Step-by-step explanation:
Hope this helps!
=)
Your answer is 225/4
hope i helped please give me brainliest
Answer: 250ft3
Step-by-step explanation:
v=l*w*H
v= 10*5 * 5
v=250
is ≈3.32 and
≈ 6.71. Look at the whole numbers, or integers, between 3 and 6. You will have 4 and 5. SInce we are looking for the sum of the integers, your sum will be 9. Hope this helped.