Answer:
a) 320 students
b) 25 students
Step-by-step explanation:
Number of 18-years old in the survey:
(We add all frequency points for each line)
0 + 30 + 20 + 60 + 70 + 40 + 60 + 40 + 0 = 320 students
Number of 18 year old spending between 25 and 35 minutes: 40 + 65 = 105
Number of 12 year old spending between 25 and 35 minutes: 30 + 50 = 80
105 - 80 = 25 students
Answer:
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what is the question?
I'll give you a head start so the first thing you wanna do is make a number line of positive and negative numbers I know you can do it
Answer:
a common denominator for 3/7 and 1/3 is 21
Answer:
x = 1
Step-by-step explanation:
The axis of symmetry for a vertically opening parabola is a vertical line with equation
x = h
where h is the value of the x- coordinate the line passes through.
The axis of symmetry passes through the vertex 1, 4 ) with x- coordinate 1
Hence equation of axis of symmetry is x = 1
