Answer:
3.45 x 10^5
Step-by-step explanation:
1.3×100=1.3
Answer: (-4) and 4
Step-by-step explanation: they are opposites
Answer:

Substituting Equation 2 into equation 1

Substitute the value of y into Equation 2

Therefore x=-8, y=-2
Step-by-step explanation:
Have a nice day :)
Step-by-step explanation:


Cross Multiplying



Therefore

Hope it will help you.
10/4
To get then watts per panel
550 / the Watts per panel to get the number of panels need
Always round this up if necessary