rounding:9lb+63lb=about 72lb
The weight (in newtons, N) of an object is given by:F = m gwhere m is the mass (in kilograms, kg), and g is Earth's gravity (which is about 9.8 newtons per kilogram, 9.8 N kg-1, though it varies slightly depending on where in the world you are).So m = F / g= 720 N / 9.8 N kg-1= 73.5 kg (approximately) Notice that the value for g is around 10, so you can estimate the weight of an object by multiplying its mass by 10 (for whole numbers of kilograms, you just put a zero on the end of the number), or you can estimate the mass of an object by dividing its weight by 10 (where there is a zero on the end of the weight, you can just remove it to estimate the mass). So since the weight is 720 N, this shows that the mass is around 72 kg.
There is no clear answer to this as the content of known reservoirs is always an estimate. Published numbers are not necessarily correct and there are widely different estimates of undiscovered oil reserves.
Exact numbers are defined numbers unlike measured numbers that often feature a fraction part. They are mostly integers found as counts of objects.
What are the quantum numbers of Br?
Positive numbers, otherwise known as real numbers.
50.0000.000
Not in this case.
Estimate 43/81 by using compatible numbers
9 + 63 = 72 lbs.
Compatible numbers would be easier. Rounding gives you 14 x 47. Compatible numbers could be 13 x 50 which would be closer to the actual product.
9+63+863+9
To estimate quotients, round the dividend and the divisor to compatible numbers.
By rounding off.
we have to find compatible numbers
The best way to estimate a quotient using compatible numbers is to first understand how compatible numbers work. They are numbers that are close in value to the actual numbers and are easily added, subtracted or divided.
by rounding off the numbers
By rounding each of the numbers involved.