Answer:
We suppose that a is the old price in cents
the total cost of 9.20 $ equals 920 cents
so we have 20 liters bought with the old price (a) and 10 liters with the new price (a + 2). This is translated into this equation where a is the old price therefore our quest to be answered
20 xa + 10 x (a + 2) = 920 (cents)
20 xa + 10 xa + 20 = 920
30 xa + 20 = 920
30 xa = 920 - 20
30 xa = 900
a = 900: 30
a = 30 (cents)
therefore the old price for 1 liter of petrol is 30 cents
(hope this helps can i plz have brainlist :D hehe)
Step-by-step explanation:
what are the fractions?
1/3 is a repeating decimal
Volume of the cylinder = πr²*h
V = π*5²*12=300π cm³ ≈ 942 cm³
So you're looking for 2 numbers you can divide to get ABOUT 4.1. This means you're going to estimate. First you can estimate that 4.1 is about 4 and then think what two numbers divide to give you 4? 8÷2 = 4 ... so now we can change it slightly to make the quotient a little higher and say
8.1÷2 = 4.05 That will round to 4.1 so you could say two numbers who's quotient is ABOUT 4.1 would be...
8.1 and 2
Answer:
The best is Option D, because the number 7.28 is between 7 and 8 which is a good estimate.
Step-by-step explanation:
Since the square root of 53 is: 7.28...
sqrt(36) = 6
sqrt(64) = 8
sqrt(81) = 9
sqrt(49) = 7
Option D would be the best estimate
Answer: The best is Option D, because the number 7.28 is between 7 and 8 which is a good estimate.
