Answer:
x = (c+a)/2
y = (c-a)/2
Step-by-step explanation:
x+y=c
x-y=a
Add together to eliminate y
x+y=c
x-y=a
--------------
2x = c+a
Divide by 2
2x/2 =(c+a)/2
x = (c+a)/2
Multiply the second equation by -1
-x+y =-a
Add the first equation
x+y =c
-x+y=-a
-----------------
2y = c-a
Divide by 2
2y/2= (c-a)/2
y = (c-a)/2
Answer:
6 the correct answer okay.
1250 × 6.5% is 81.25 add that to 1250 and get 1331.25.
<span>Hermione’s Bikes rents bikes for $10 plus $4per hour. Janice paid $30 to rent a bike. For how many hours did she rent the bike?</span>
X=1 y=8
x=2 y=20
x=3 y=32
x=4 y= 44
The y increases by 12 every hour, so it is a linear equation
