Answer:
41
Step-by-step explanation:
5(4) - 7(-3)
20 + 21 (because it's a negative times a negative and that equals a positive)
41
Answer: There are 14 students not taking any foreign languages.
Step-by-step explanation: Take the total number of students and subtract it by the number of students who are taking each class. So you would get 19 for French, 12 for Spanish, and 7 for both. Then you would add those numbers up and get a total of 38. You would then do the same except subtract each total of students by 30 to find how many of the 30 are not taking each class or both. You would then get 11 for French, 18 for Spanish, and 23 for both. Add those numbers up and get 52. Then you would subtract 38 from 52 thus giving the final answer 14.
Answer:
It is the chart on the left beacuse it reapetsX 2
Answer:
diffusion
Step-by-step explanation:
Diffusion is the movement of particles from an area of high concentration to an area of low concentration
There are 5 cards total, "sample space of 5", there are 3 blue cards, "favorable outcomes of 3".
the chances of getting the first blue will be 3/5.
once the first blue is pulled out, and not put back, the sample spaced changed to 4, and since there are only 2 blue cards, the favorable outcomes changed to only 2.
the chances of getting the 2nd blue card is 2/4 or 1/2.
P( second blue | first blue) = P(first blue) * P(second blue)