The roots are 1, -3 and -1.
Solving a cubic equation:
http://www.1728.org/cubic2.htm
Answer:
Step-by-step explanation:
P(2 heads) = P(first flip = head)*P(second flip = head)
=> 
= 
P(1 head) = P(first flip = head)*P(second flip = tail) + P(first flip = tail)*P(second flip = head)
= 
P(no heads) = P(first flip = tail)*P(second flip = tail)
=
E(winning) =
= 
=
Answer:
64
Step-by-step explanation:
Half (50%) of 64 would be 32
Following order of operations:
3^2 = 9
(10-2) = 8
Now you have :
9 + 8 x 5 -4
Multiplication is next:
9 + 40 -4
Now just add and subtract from left to right:
9 + 40 = 49
49-4 = 45
The answer is 45
Answer:
x = 70°
Step-by-step explanation:
The external angle of a triangle is equal to the sum of the 2 opposite interior angles.
120° is an external angle of the triangle, thus
x + 50 = 120 ( subtract 50 from both sides )
x = 70
