3x + y=11
-2x + y=1
Solve using substitution method

3x+yl=11

-2x+y=11

y=11-3x

-2x+11-3x=11

-5x=11-11

so x=0

y=11-0

y=11

Step-by-step explanation:

here's the solution : -

=》3x + y = 11

=》y = 11 - 3x

now, plugging the value of y in equation 2

=》-2x + y = 1

=》-2x + 11 - 3x = 1

=》-5x = -10

=》x = 2

now, plugging the value of x as 2 in equation 1

=》3x + y = 11

=》6 + y = 11

=》y = 11 - 6

=》y = 5

see explanation

step-by-step explanation:

since the sequence is geometric there is a common ratio r between consecutive terms, that is

r = 4 ÷ - 2 = - 2

r = - 8 ÷ 4 = - 2

r = 16 ÷ 8 = - 2

the next term - 13 must be incorrect as it should be - 32 for the sequence to be geometric.

the first 4 terms are therefore geometric with common ratio r = - 2