1.
Solve
k
=
k
-
.
A.
-2
B.
-
C.
2
D.
Hint
2.
Solve 5.4
a
+ 8.2 = 9.8
a
- 2.8.
A.
1.2
B.
2.5
C.
-2.5
D.
-1.2
Hint
3.
Solve 75 - 9
h
= -20 + 10
h
.
A.
-5
B.
5
C.
55
D.
-55
Hint
4.
Write an equation to find the value of
x
so that each pair of regular polygons has the same perimeter. Then solve.
A.
8
x
+ 4 = 12
x
; 1
B.
8
x
+ 1 = 12
x
; 1
C.
8
x
+ 4 = 10
x
; 2
D.
2
x
+ 1 = 2
x
; 1
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
- 2; 5
D.
6
x
+ 18 = 10
x
+ 6; 6
Hint