Answer:
a)(i)x2= -0.5
b)(ii)x3= -0.28125
Step-by-step explanation:
Sorry But I cannot explain the working out.
Answer:
4 pens
Step-by-step explanation:
better value
Answer: 8.373205741626794e-4
Step-by-step explanation: Thant is what i got on my calculator
Add the two functions together to get
7y=-3
y=-3/7
Then plug in y to either function to solve for x, I’ll just use the left one
15(-3/7)-9x=-9
-45/7-9x=-9
-9x=-18/7
x=18/7/9
x=2/7