Answer:

Step-by-step explanation:

Answer:
x = 9.
Step-by-step explanation:
-5 square root x =15
divide both sides by -5:
√x = 15/-5 = -3
Squaring both sides:
x = 9.
Make an equation
X+X+200=1500
Isolate the variable
2x=1300
X=650
Know that we know what X is, we know that X + 200 will equal the cost of the second appliance
650+850=1500
Answer:

Step-by-step explanation:
Given equation,


( commutative law of multiplication )
( Associative property )
( identity property )
( Associative property )
( identity property )