I think the answer is 19.5
The system of equation that has one solution is: (d) –2x+ 7y = –5 and 2x +7y = –9
<h3>What are systems of equations?</h3>
This is a group of equations which may have none, one or more solutions.
From the list of given options, the system of equations that has one solution is:
–2x+ 7y = –5 and 2x +7y = –9
This is so because, the solution is (-1,-1)
However, the other systems have infinite many solutions
Read more about system of equations at:
brainly.com/question/13729904
Answer:
405
Step-by-step explanation:
r sequence= 5,15,45,135
d sequence:=10,30,90,270
r ratio is the Radio
d ratio is de Diameter
2*r=d
5*2=10, 15*2=30, 45*2=90, 135*2=270
to complete the sequence:
r+d= next r and continue
5+10=15
15+30=45
45+90=135
135+270=405
Answer: all of them are x,y
Step-by-step explanation:
Answer: x=8
Step-by-step explanation:
Hope this helps
