In a cage are 4 blue budgies, 5 red budgies and 3 green budgies. The door of the cage is left open and two fly out. a) Copy and complete the tree diagrams.
b) Calculate the probability that,
i) 2 blue budgies fly out
ii) 2 red budgies
iii) a green and red budgie fly out
iv) at least one of them is blue
v) no green budgies escape

entering that problem on the tube might get you an answer

u = -(6/7)w

step-by-step explanation:

place all values with 'u' on one side of the equation.

4u + 8w = - 3u + 2w

4u + 3u = 2w - 8w

further simplify the equation by solving the addition and subtraction.

7u = - 6w

make 'u' the independent variable by placing its co-efficient on the right-hand side.

u = - (6/7)w

80x^8−68x^6+16^5−20x^4−4x^3+8x^2

hope i'm right lol

x is the total time in minutes for the free response

you are given number of questions as 15 - m and time per item as 8 minutes

to find x multiply the two givens together:

x = 8 * (15-m) = 8(15-m)