Answer:
x=1
Step-by-step explanation:
Multiply both sides by 11.
Answer:
y=2
x=7
Step-by-step explanation:
subtract equation 1 from 2
0+2y=4
y=2
substitute y into equation 1
x+2=9
x=9-2
x=7
60 in total nd there is 20 kids who cant swim so i think 60:20??
Answer:
T
n
+
1
=
T
n
+
d
T
1
=
a
Where the first term is equal to
a
and the common difference is
d
.
Option a can be expressed as follows:
T
n
+
1
=
T
n
+
4
T
1
=
1
Option c can be expressed as follows:
T
n
+
1
=
T
n
−
4
T
1
=
1
Hence both are arithmetic sequences (the other two options are geometric sequences with common ratios of 4 and 0.25 respectively)
Hope that helps :)
Step-by-step explanation: