Aim #12: How do we solve literal equations?
HW: pg 60-61 #2-4,8-13,16-19
9-27-16
Do Now: Solve the following equations for x:
2x - 6 = 10
-3x - 3 = -12
Solve the equation for a:
ax - b = c
ax - b = c
Is there any restriction on the value of x? Why?
The perimeter of a rectangle is given by the formula p = 2(l + w), where p is the
perimeter, l is the length and w is the width.
If p = 70 and w = 15, solve for l:
Now solve for variable l first, then plug in the values for p and w. Do we get the
same answer?
HW #11 Answers: p. 58 #1-4, 6-17
1) D
6) x = 2
10) x = 4
14) x = 12
2) B
7) a = 0
11) x = 13/2
15) x = 3
3) B
8) x = 5
12) x = 2
16) x = 1/2
4) A
9) x = 2
13) x = 25/2
17) n = 1
Rearrange each formula to solve for the specified variable.
Assume no variable is equal to 0.
1.
A = P(1 + rt)
a) Solve for P
b) Solve for t
2.
a) Solve for m
b) Solve for v
Rearrange each formula to solve for x. Assume no variable is equal to 0.
a)
ax + b = d - cx
Solve the following equation for a:
b)
Solve the following for x:
a)
Solve for m: a)
Solve for d:
b) 3px = 2q(r - 5x)
c)
b)
Solve for a:
Sum It Up!!!
When solving ____________ equations, we follow the same rules since variables
are just "placeholders" for numbers.
Attachments
HW 11 ­ proportions.pdf