Sally travels to work by train every day. The probability that her train will be late on any day is 0.16
Thursday
Friday
a) Complete the probability tree
diagram for Thursday and
0.16
late
Friday
(2)
late
b) Work out the probability that
0.16
her train will be late on at
0.84
least one of these two days. (3)
not late
1
0.16
late
+
0.84
not late
0.84
not late

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.

step-by-step explanation:

pakistan's principal natural resources are arable land and water. about 25% of pakistan's agriculture accounts for about 21% [1] of gdp and employs about 43% of the labour force. in pakistan, the most agricultural province is punjab where wheat and cotton are the most grown.