Sounds as tho you meant:
4n = (2/7)(500)
1000
If that's the case, then 4n = ------------
7
1000 250
or n = ------------ = --------- (answer)
28 7
Check: does 4(250/7) equal (2/7)(500)? YES.
Answer:
The correct ordered pair is (7,1)
Step-by-step explanation:
The given system has equations:
We make x the subject in the first equation to get:
Put equation 3 into equation 2 to get:
Expand:
Put y=1 into equation 3 and solve for x.
The correct ordered pair is (7,1)
One hundred thousand two hundred and three
Answer:
Step-by-step explanation:
p and h are number of plumbers and helpers, respectively.
Twenty workers earn a total of $2600
p+h = 20
h = 20-p
160p + 100h = 2600
160p + 100(20-p) = 2600
60p = 600
p = 10
h = 20-p = 10
Ten plumbers and ten helpers.