Answer:
More clarification
Step-by-step explanation:
2 of a white ball =2/30 =1/15;
This is the probability of picking a black ball.
Let the number of black ball be X
x/(x +20)= 1/15[ probability of picking black ball ]
15x = x + 20 ; by cross multiplication
14x=20; x = 20/ 14 =1.42 = 1 [ approximately]
But to satisfy the premise given above; we have to approximate the no of balls to 2
By rounding 842 to 800, she can multiply 800 by 3 to get 2,400.
then, multiply 40 by 3, you get 120 and add the two together to get 2,520
this shows her answer is not necessary reasonable
Answer:
is the answer
Step-by-step explanation:
÷
can be turned into
·
using the KCF method. now we solve:
8\4=2
is the answer
Answer:
Step-by-step explanation:
Only j,q,k beat 10 and there are four each of them so there are 12 cards that will beat the ten. 4 cards have already been drawn so there are 52-4=48 cards left in the deck, so the probability of beating the 10s is
12/48
1/4
Which is 25%