30= 20% of ?
30= 20/100 (x)
30= .2 (x)
x=150
150 kids are at the shcool
Use the expression:
y₂ - y₁
--------
x₂ - x₁
choose one set to be your ₁, and the other to be your ₂. Plug them in
3 - 2 1
------- = ----------
5 - (-2) 7
your slope will be 1/7
hope this helps
On her third test she should get 67 marks
so therefore 71 + 87 + 67 = 225
225 divide by 3 (as three tests) = 75
Answer:
9 years old
Step-by-step explanation:
I will be there at the same time I don't hear