Answer:

Step-by-step explanation:
We use the formula;

where m:n=2:3 and 
We substitute these values to get;

We simplify to get:


Answer:
36 ft
Step-by-step explanation:
The first step is to find the length of the hypotenuse of the newly formed right triangle. Using the Pythagorean theorem:

Adding this to the 10 foot tall part of the tree that remains standing, you get an initial height of 26+10=36 feet. Hope this helps!
Answer:
£199.95
Step-by-step explanation:
100% - 69% = 31%
31% of £645
= 31/100 × £645
= 0.31 × £645
= £199.95
= £199.95 is the final answer as it cannot be rounded off to 2 DP.
Answer:
0.75
Step-by-step explanation:
The probability of P(not event a) is equal to 1-p(event A)