Answer:
675
Step-by-step explanation:
Let the ratio be 'R'
Total number of students = 1050
Then,
9R + 5R = 1050
R = 1050
=> R = 75
Hence, the number of boys = 9R = 9 x 75 = 675
Answer:
0.49
Step-by-step explanation:
From the Venn diagram:
The number of students that study biology and physics = 2
The number of students that study biology and chemistry = 6
The number of students that study chemistry and physics = 4
The number of students that study only physics = 5
The number of students that study only biology = 7
The number of students that study only chemistry = 8
The number of students that study all 3 subjects = 3
The number of students that study none = 6
Therefore the total number of students = 2 + 6 + 4 + 5 + 7 + 8 + 3 + 6 = 41 students
The number of students that study chemistry = 8 + 6 + 3 + 4 = 21 students
The number of student that does not study chemistry = 41 - 21 = 20 students
the probability chosen at random that that child does not study chemistry = number of student that does not study chemistry / total number of students = 20/41 = 0.49
Answer:
1 + y ≥ 9
Step-by-step explanation:
Answer:
The dependent variable is h and the independent variable is t
Step-by-step explanation:
Given
Required
The dependent and the independent variable
The 
is the whose value 
on another.
In the above equation, the height (h) depends on time (t) for its value
Hence,
The 
is h and the 
is t
Answer:
11.66
Step-by-step explanation:
√(-4-2)²+(-5-5)²
√(36)+(100)
√136
11.66
