Answer:
Step-by-step explanation:
x^2+8x-3=0 (move constant to other side by adding 3 to each side)
x^2+8x=3 (halve thr linear coefficient, square it and add to each side, (8/2)^2=16)
x^2+8x+16=3+16 (now the left side is a perfect square)
(x+4)^2=19 (now take the square root of each side)
x+4=+-(19^(1/2)) (finally subtract the constant to isolate x by itself)
x= -4+-(19^(1/2))
x=negative four plus or minus the square root of nineteen
Step-by-step explanation:
A) 45
B) 6
C) 6.7082039326
Answer:
3/13
Step-by-step explanation:
three socks out of the 13 are black. therefore you have a 3/13 chance of picking black.
Answer:
Its the first answer choice, basically just plug 3a +1 for a and solve
Step-by-step explanation:
2x - y = 5
-y = 5 - 2x
.........
