Zero isn’t a positive or negative therefore it can be considered opposite from itself
Answer:
The equations:

the value for x and y:

Step-by-step explanation:
invest amount = 12900
let x = amount put into the first account
let y = amount put into the second account
we know the sum of of both is 12900, thus

We also know the sum of their annual interest rate is 1103

Thus the equations needed are
and 
To find the values for x and you know have all equations you need
we need to get this equation
to a single variable
we can do this using x or y, lets use x
we know
, so

lets plug
into 

1161 - .09y + .08y = 1103
-.01y = -58
y = 5800
we can get x from this equation
from above

Answer:
12.75 dollars
Step-by-step explanation:
5% = 2.94$
150% = 7$
2.80 + 5% + 150% = 12.75 for each t-shirt she sale
Answer:
răspuns corect :a 2x -8y +3
Step-by-step explanation:
dami coroana te rog
Answer:
450x .065= $29.25 increase
new rent will be
450 + 29.25= $479.25