3.option a (-8,2)
4.option b (5,4)
Answer:
The frequency distribution is given below:
Class Frequency
0 - 9 9
10 - 19 6
20 - 29 3
30 - 39 3
40 - 49 3
From the given 4 options, the histogram in option A accurately displays this data. Hence the option A is correct.
Answer:
7c - 28
Step-by-step explanation:
7(c - 4)
(7 × c) + (7 × - 4)
7c + (7 × - 4)
7c + -28
7c - 28
Answer:
n stands for the unknown number
Step-by-step explanation:
It's the only variable in the equations, so it is the only one that can stand for any unknown.