You know that 7*7 is 49, and 6*6 is 36. Now you know it will be 6._. 6*7 is 42, so think of that as 6.5^2. You know that it will most likely be less than 6.8 since it is so close to being 7*7, which is 4 above your desired number. This leaves 6.6 to 6.8 as your estimate. Personally, I would go straight in the middle and choose 6.7.
I hope this helps!
Hi
7 = 14.70
15= X
so : X = 15*14.70 /7 = 31.5
15 liters of petrol cost 31.5
Answer:
controller
Step-by-step explanation:
Answer:
ight
Step-by-step explanation:
I'll think bout it.
I may join, but I won't be on that much.
Answer:
Sorry, I forgot what the a means
Step-by-step explanation:
is it multiplcation , division, subtraction, or addition?
