Answer:
-30
Step-by-step explanation:
-20-8=-28
-28-12
=-30
20 total marbles....7 are green
probability on first draw is 7/20...and since the marble was not replaced, the probability on the second draw is 6/19. And since they cant happen at the same time, we multiply
7/20 * 6/19 = 42/380 which reduces to 21/190
I guess it shows he is ok with taking risks.
Step-by-step explanation:
Please specify values so we may answer. Judging by the looks of the question, this uses the concept of similarity
Answer:
<h2>Bibi ate 6.3 pounds of food, approximately.</h2><h2>Rexy ate 5.7 pounds of food, approximately.</h2>
Step-by-step explanation:
1. What is this situation about?
The situation described is about the amount of food those dogs eat, and its relation with their weights.
2. What are the quantities in this situation?
The quantities are aboth the weight of each dog, and the number of pounds of dog food.
3. What mathematical questions could we ask?
We could ask the pounds of food each dog eats, in proportion with their weights.
4. Answer the question.
To answer that question, we just need to form a proportion.

Where
is the total pounts Rexy ate, and
is the total pounts Bibi ate.

Therefore, Bibi ate 6.3 pounds of food, approximately.
Then, 
Which means, Rexy ate 5.7 pounds of food, approximately.