Answer:
Step-by-step explanation:
(x+3)² -5 =0 , use the formula (a+b) ² = a²+b²+2ab
x²+9 +6x -5 =0 , combine like terms
x²+6x +4 =0, use the quadratic formula x = (-b±√b²-4ac)/2a
x= (-6 ±√6²-4*1*4)/2*1
x= (-6 ± √36-16) /2
x= (-6±√20)/2
x=(-6 +2√5)/2 and x=( -6-2√5) /2, factor 2 in the numerator and simplify
x= -3 +√5 and x= -3 -√5
512=2w^2 is the best answer
Answer: One solution Explanation: just did this lesson a day ago
Answer:
0.083 probability that both are red
Step-by-step explanation:
total marbles = 5 + 7 + 4 = 16
Two marbles drawn out.
Find P(red, and red) = (5/16) * (4/15) = 1/(3*4) = 1/12 = 0.08333
Answer:negative 3
Step-by-step explanation:
