Answer:
the answer is 16
Step-by-step explanation:
i hope you have a wonderfull day!
<u>the correct question is</u>
The denarius was a unit of currency in ancient rome. Suppose it costs the roman government 10 denarii per day to support 4 legionaries and 4 archers. It only costs 5 denarii per day to support 2 legionaries and 2 archers. Use a system of linear equations in two variables. Can we solve for a unique cost for each soldier?
Let
x-------> the cost to support a legionary per day
y-------> the cost to support an archer per day
we know that
4x+4y=10 ---------> equation 1
2x+2y=5 ---------> equation 2
If you multiply equation 1 by 2
2*(2x+2y)=2*5-----------> 4x+4y=10
so
equation 1 and equation 2 are the same
The system has infinite solutions-------> Is a consistent dependent system
therefore
<u>the answer is</u>
We cannot solve for a unique cost for each soldier, because there are infinite solutions.
Answer:
2.5
Step-by-step explanation:
To find the answer, we need to see by how much 20 changed to 30.
20 (1.5) = 30
So that means that
9 (1.5) = 13.5
Answer: 4/9
Step-by-step explanation: we are going to multiply side to bottom so that would be 2/3x3 which equals 6/9 then you multiply the multiplication ( 6/9) by the 2/3 which equals 12/27. the GCF of 12 and 27 is 3. so when you simplify you get 4/9. mark me brainiliest pls