1.
Solve 4
x
= 45 - 11
x
.
A.
-8.5
B.
8.5
C.
3
D.
-3
Hint
2.
Solve
k
=
k
-
.
A.
-
B.
C.
2
D.
-2
Hint
3.
Solve 5.4
a
+ 8.2 = 9.8
a
- 2.8.
A.
2.5
B.
-1.2
C.
-2.5
D.
1.2
Hint
4.
Solve 75 - 9
h
= -20 + 10
h
.
A.
-55
B.
55
C.
5
D.
-5
Hint
5.
Write an equation to find the value of
x
so that each pair of polygons has the same area. Then solve.
A.
6
x
+ 18 = 10
x
- 6; 6
B.
12
x
+ 36 = 10
x
- 6; 21
C.
6
x
+ 18 = 10
x
+ 6; 6
D.
6
x
+ 18 = 10
x
- 2; 5
Hint