Download LT 1 I will be able to solve Equations and Proportions.

Algebra 1
Name___________________________________
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LT 1 I will be able to solve Equations and Proportions.
ISOLATE THE FOLLOWING FORMULAS FOR THE REQUESTED VARIABLE.
1) A = BH; H
2) P = 2L + 2W; W
3) C = 2pr;
4) I = prt; t
r
1
5) A = Dd; d
2
7) P = B +
Lb
; L
2
6) P = 4s; s
8) d = rt; t
Solve each equation.
9) -1 = -m - 4 + 4
1
8
11) -9 = - x - x
3
3
10) -
17 1
= x-2-3
3 2
12) -5.7 = 1 + 2.6r + 1.1
Worksheet by Kuta Software LLC
-1-
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13) 5.44 = 0.4x + 3x
14) -422 = -10(4x - 1) - 8x
15) b - 1 = b - 2 + 1
16) -11b - 8 = -3b
17) -49 - 8n = -8(n + 6)
18) -n +
13 1
= n+1
4 2
Solve each proportion.
19)
9 n
=
8 3
20)
r+8 5
=
7
4
21)
v+3 7
=
v
2
22)
7 x-1
=
2 x-5
23)
7
3
=10
b
24) -
3
6
=k+5
5
Worksheet by Kuta Software LLC
-2-
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Answers to LT 1 I will be able to solve Equations and Proportions.
A
B
2a
5) d =
D
9) {1}
1) H=
13) {1.6}
16) {-1}
20) {0.75}
24) {-2.5}
P - 2L
p
or - L
2
2
P
6) s =
4
4
10) 3
14) {9}
17) No solution.
2) W =
{ }
21) {1.2}
C
2p
2P - 2B
7) L =
b
11) {3}
3) r =
15) { All real numbers. }
3
18)
2
{
22) 6.6}
{}
I
pr
d
8) t =
r
12) {-3}
4) t =
19) {3.37}
23) {-4.28}
Worksheet by Kuta Software LLC
-3-
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