Answer:
a.(2/7,31/7) b.(97,71)
Step-by-step explanation:
im not writing all the work i did its just substitution of the value of x and y from the second equation to the first
Answer:
C
Step-by-step explanation:
start with factoring.
5x+15-9x+4
then solve
-4x+19
The answer is 27/23. The way you listed the answers is confusing so I’m not giving a letter. Because [17+10]/[17+6]= 27/23
Answer: -8.5
Step-by-step explanation:
I got it right on edg
Answer:
11.95 dollars
Step-by-step explanation:
Cost of one LED bulb = 6.95 dollars
Cost of changing one bulb = 3 dollars
Life of each bulb = 5 years.
In 10 years, only one time after 5 years the bulbs would have been changed
Hence cost of 100 lamps = 695 and
cost of changing once = 500
Total cost = 1195 dollars for 11 years
Divide this by 10 years to get average cost per year
Cost of 100 lamps per year = 1195/100 = 11.95 dollars
