Transcript Rearranging Formulas - Lesson 5

Rearranging
Formulas
Lesson 5
Things to Remember
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If adding or subtracting, use the zero effect
to isolate the variable.
If there is only one fraction, use the zero
effect first then multiply by the denominator.
If there is more than one fraction, use the
LCM first, then zero effect if needed.
Solve the formula for w
A = lw
Things to Remember:
A = lw
A
= lw
l
l
A = w
l
Isolate the variable
You may need to multiply by
the variable in the
denominator
You may need to divide by
the variable in front of
the variable you want to
isolate
Solve the formula for h
A = 1 bh
2
Things to Remember:
1
A=
bh
2
(
2(A) = 2 1 bh
2
2A = bh
2A = bh
b
b
2A = h
b
)
Isolate the variable
You may need to multiply by
the variable in the
denominator
You may need to divide by
the variable in front of
the variable you want to
isolate
Solve the formula for a
g=a+w
Things to Remember:
g=a+w
g-w=a+w-w
g-w=a
Isolate the variable
Use the zero effect
You may need to multiply by
the variable in the
denominator
You may need to divide by
the variable in front of
the variable you want to
isolate
Solve the formula for t
W = R + Ht
Things to Remember:
W = R + Ht
W - R = R - R + Ht
W - R = Ht
W - R = Ht
H
H
W-R
= t
H
Isolate the variable
Use the zero effect
You may need to multiply by
the variable in the
denominator
You may need to divide by
the variable in front of
the variable you want to
isolate
Solve the formula for u
v = u + at
Things to Remember:
Isolate the variable
Use the zero effect
You may need to multiply by
the variable in the
denominator
You may need to divide by
the variable in front of
the variable you want to
isolate
Solve the formula for u
v = u + at
Things to Remember:
v = u + at
v - at = u + at - at
v - at = u
Isolate the variable
Use the zero effect
You may need to multiply by
the variable in the
denominator
You may need to divide by
the variable in front of
the variable you want to
isolate
Solve the formula for R
C = F + Rn
Things to Remember:
Isolate the variable
Use the zero effect
You may need to multiply by
the variable in the
denominator
You may need to divide by
the variable in front of
the variable you want to
isolate
Solve the formula for R
C = F + Rn
Things to Remember:
C = F + Rn
C - F = F - F + Rn
C - F = Rn
C-F
n
= Rn
n
C-F
= R
n
Isolate the variable
Use the zero effect
You may need to multiply by
the variable in the
denominator
You may need to divide by
the variable in front of
the variable you want to
isolate
Solve the formula for u
s = ut + 1 at2
2
Things to Remember:
Isolate the variable
Use the zero effect
You may need to multiply by
the variable in the
denominator
You may need to divide by
the variable in front of
the variable you want to
isolate
Solve the formula for u
s = ut + 1 at2
2
Things to Remember:
1
s = ut + at2
2
2(s) = 2(ut) + 2( 1
2
2s = 2ut + at2
at2)
2s - at2 = 2ut + at2 - at2
2s - at2 = 2ut
s - at
2s - at2 2ut
=
= t
= u
2t
2t
2
Isolate the variable
Use the zero effect
You may need to multiply by
the variable in the
denominator
You may need to divide by
the variable in front of
the variable you want to
isolate
Class work
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Complete Lesson 4(3) and pass in
Copy down notes and examples to Lesson
5
Complete Lesson 5 worksheet