Answer:5400
Step-by-step explanation: 1 hour is 60 minutes, so 90 * 60 = 5400
Answer:
one million seven hundred and fifty thousand
Step-by-step explanation:
the 3 quarter million is 750,000 (seven hundred and fifty thousand)
and the one million is a million
If you put brackets around (2+1), your method of working is:
1) 15-4*(2+1)=3
2) 15-4*3=3
3) 15-12=3
You don't need any more brackets, as the BIDMAS (brackets, Indices, division, multiplication, addition, subtraction) rule does the rest of the job for you.
The answer is therefore: 15-4*(2+1)=3
lol we have the same question on our test besides i’m in middle school Answer: idfk
Step-by-step explanation: don’t ask me i’m failing math
You solve the substitution method to solve a system of equality by expressing one variable in terms of the other using one equation, and then plugging this expression in the other(s).
In this case, the first equation gives us a way to express n in terms of m. So, we can replace every occurrence of n in the second equation with the given formula.
The result is

So, the second equation turned to be an equality, i.e. an equation where both sides are the same.
This implies that the system has infinitely many solutions, because every couple
such that
is a solution to the system, because it satisfies both equations: the first is trivially satisfied, whereas the second is an identity, and as such is satisfied by any value of the variable.