Ineed with this

there are 9 counters in a bag. there is a number on each counter.
the counters are: 1,1,2,2,2,3,3,3,3
kal takes at random 3 counters from the bag. he adds together the numbers on the 3 counters to get his total. work out the probability that his total is 6.

15% chance.

step-by-step explanation:

3/10 times, the 5 year old will get a tablet. 5/10 times, the 13 yer old will get a tablet. multiply both fractions to get 15/100 times, both would have a tablet.

first, you divide the triangle in two, tô form a retangle triangle. after, using pythagoream theorem:

18^2 = 14^2 + (x/2)^2

(x^2/4) + 196 = 324

x^2/4 = 324 - 196

x^2/4 = 128

x^2 = 512

x = √512

x = √2^9

x = 16√2 cm

i hope i you.