<span>let number of hours of Isaac,Ruby and Svetlana worked be x,y and z respectively.
so y= x+6 ( equation 1)
note: Ruby (y) worked 6 hours more than Isaac (x)
z = 4 x y ( equation 2)
note : Svetlana (z) worked 4 times as many hours as Ruby (y)
x+y+z= 126 ( equation 3)
note: Together they (x,y,z) worked 126 hours.
substitute eqn 1 to eqn 3
so x+y+z= 126 becomes
y-6 + y+z-126
2y+z= 126+6
2y+z=132 (equation 4)
the substitute eqn 2 in eqn 4
so 2y+z=132 becomes
2y+4y=132
6y=132
y=132/6= 22
so y=22
substitute y value in equation 1
so y= x+6 becomes
x+6=22 and
x= 22-6 = 16
and substitute x and y values in equation 3
so 16+22+z= 126
38+z= 126
z= 126 -38 = 88
So the number of hours Isaac worked (x) is 16 hours
number of hours Ruby worked (y) is 22 hours
number of hours Svetlana worked (z) is 88 hours</span>
Answer:
it will be 603.00
it will. e counted from the right to the left
Answer: The percentage change in GDP over this time period is about 4.14%.
Step-by-step explanation:
Given: The approximate nominal GDP in 2010 = $14.5 trillion
The approximate nominal GDP in 2011 = $15.1 trillion
Now, the change in GDP over this period =
The percentage change in GDP over this time period will be :
Hence, the percentage change in GDP over this time period is about 4.14%.
Answer:
the ine you have selected is right
Step-by-step explanation:
we know12 inches is 1 foot we can keep going up andsee that 24 inches is 2 and so on