Its 7.6 hope this helped :)
Answer:
x=3 and y=1
Step-by-step explanation:
subtract equation 2 from 1
then (2x+3y) -(2x+y) =9-7
2x-2x+3y-y =2
2y=2 therefore y=1
substitute y value in 2x+y=7
2x+1=7
2x=7-1
2x=6
x=3
Answer:
Step-by-step explanation:
Given
Stage 20 has
circles
Considering at each consecutive stage circle doubles itself
So at stage 21, there will be
circles