The number of students that play hockey is 7
The proportion is given as:



The total number of students must be a multiple of 2, 4 and 7 less than 30;
The only multiple of 2, 4 and 7 less than 30 is 28.
The number of students that play hockey is the product of 28 and the proportion that plays hockey.
So, we have:

Multiply

Hence, 7 students play hockey
Read more about common multiples at:
brainly.com/question/290451
Answer: 42 cm3
Step-by-step explanation:
I think it means meter per second.
we know that
Average Rate of Change. is the change in the y-value divided by the change in the x-value for two distinct points on the graph
So

in this problem

substitute the values in the formula above

Divide by
both numerator and denominator

therefore
the answer is

Is this trigonometry or geometry