Answer:
7.5 is the perimeter
Step-by-step explanation:
perimeter is sum of all sides
You will use x amount of 60% solution and y amount of water. Altogether, you will make 10 L of 50% solution. The first equation is: x + y = 10 Do you understand it so far?
Answer:
1.$175
2.$128
3.$55
Step-by-step explanation:
1.
40×.25=35
140+35=175
2.
80×.6=48
80+48=128
3.
50×.1=5
50+5=55
Answer:
-9a -5b
Step-by-step explanation:
