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

trapezoid

step-by-step explanation:

first i plotted all my points on a grid graph

i made sure all of them were in the correct quadrant

then i saw it was a trapezoid or a quadrilateral

the real question is why is this guys last name heavyfoot

step-by-step explanation:

a

step-by-step explanation:

given the 2 equations

- x + y = - 2 → (1)

2x - 3y = 4 → (2)

multiplying (1) by 2 and adding to (2) will eliminate the x- term

- 2x + 2y = - 4 → (3)

add (2) and (3) term by term

(2x - 2x) + (- 3y + 2y) = (4 - 4), simplifying gives

- y = 0 ⇒ y = 0

substitute y = 0 in either of the 2 equations for corresponding value of x

substituting in (2) gives

2x = 4 ( divide both sides by 2 )

x = 2

solution is (2, 0 ) → a