Answer:
a≤9
Step-by-step explanation:
Answer:
22.5
Step-by-step explanation:
8hrs=220
1hr=220÷8
1hr=22.5
6.6
×
10
−
8
3.3
×
10
−
4
=
2
×
10
−
4
Explanation:
6.6
×
10
−
8
3.3
×
10
−
4
=
6.6
3.3
×
10
−
8
10
−
4
=
2
×
10
(
−
8
)
−
(
−
4
)
- as
a
m
a
n
=
a
m
−
n
=
2
×
10
−
8
+
4
=
2
×
10
−
4