Step-by-step explanation:
this is your answer to the question that you asked
Answer: 
Step-by-step explanation:
If this is asking for the probability of randomly drawing a blue marble then it'll be however many blue marbles (what you're trying to find) out of the total number of marbles
Blue marbles: 7
Total marbles: 20

Answer:
Students liked to play football are 210 .
Step-by-step explanation:
Formlua

As given
In a school, 42% of the students liked to play football and 24% liked to play tennis.
As the percentage is always 100% .
Percentage of students choose swimming = ( 100 - 42 - 24) %
= (100 - 66) %
= 34 %
The rest of the students choose swimming If 170 students choose swimming .
Part value = 170
Percentage = 34 %
Putting all the values in the formula


Total value = 500
As the percentage for students liked to play football = 42%
Putting in the formula



Part value = 210
Thus
Students liked to play football = 210
Therefore the students liked to play football are 210 .
If you add them straight down:
2d-e = 7
d + e = 5
Then the e's cancel out.
You are left with 3d = 12
Then solve for d by dividing each side by 3.
Now you have d =4.
To solve for e go back into one of your original equations and substitute 4 for the d.
You can use either equation, so I'll choose the second one.
4 + e = 5
Now solve for e by subtracting each side by 4.
Now you have e = 1.
So your solutions are d = 4 and e = 1
The correct answer would be 11 bags because first, you need to find the area of the lawn, 410 x 65 and divide it by 2500 ft which would give you 10.66 but you round up to 11