Step-by-step explanation:
Mean = Average : Sum of the data ÷ Number of data
So find the average number of lates per student
4 = Lates
30 (sum of frequencies) = Frequencies
So 4 ÷ 30 = 7.5
Therefore the answer is 7.5..
15x is greater than or equal to 525
the answer is X is greater than or equal to 35
Answer:
i forgot but i did this earler
Step-by-step explanation:
Answer:
The correct answer is A) -19 1/2
Step-by-step explanation:
Answer:

Step-by-step explanation:
we know that


Let
x ------> new battery life
The equation that represent this situation is

convert to mixed number
