| answers: c b c c b b a b c
|
| The first 4 probs. are from 2.3
|
| 1. Solve for y : F = ay + by + cy
+ dy |
| ay
= (F - by - cy - dy)/a |
| by
= F/(a - b - c - d) |
| cy
= F/(a + b + c + d) |
| dnone
of the above |
| 2. Solve for t: 9*bhgt
= W |
|
at = 9W/(bhg) |
|
bt = W/(9bhg) |
|
ct = 9W/(bh) |
|
dnota |
| 3. Solve for x : -G = -143 + x |
|
ax = G
- 143 |
|
bx = G + 143 |
|
cx = 143-
G |
|
dnota |
| 4. Solve for d: A = (a - b + c + d)/3
|
|
ad = 3A +
b - c + a |
|
bd = 3(A +
b - c - a) |
|
cd = 3A +
b - c - a |
|
dnota |
| The next 5 probs. are from 2.4 |
| 5. 52 is what percent of 208?
Translate this. |
|
a 52
= n*0.208
|
|
b 52 =
n*208
|
|
c 208
= n*52
|
|
dnota
|
| 6. The solution for n in percent
form is in the previous
problem is : |
|
a0.25 |
|
b25 % |
|
c0.25 % |
|
dnota |
| 7. What number is 60 % of 240?
Translate this. |
|
ax =
0.60·240 |
|
bx =
60·240 |
|
c0.60
=x·240 |
|
dnota |
| 8. The solution for x in the previous
problem is : |
|
a 1.44 |
|
b144 |
|
c14.4 |
|
dnota |
| 9. What percent of 136 is 34 ? The
translation and answer are: |
|
an*4=
136 and n = 25 % |
|
bn*36 =
34 and n = 0.25 % |
|
cn*136 =
34 and n = 25 % |
|
dnota |
10. Written Problem Sec. 2.5. The top of a building
is a rectangle whose length L is 60 ft more than the
width W. The perimeter is 520 feet. What are the length L and width
W? Show all work !!!!!
520 = 2(L + W)
L = W + 60
Substitute into the first equation:
520 = 2( W + 60 + W)
520 = 2(60 + 2W)
520 = 120 + 4W
400 = 4W
100 = W
L = W + 60 = 100 + 60 = 160 |
| 11. Written problem: What is the area of
the rectangle of the previous problem? Area = LW = 160*100
= 16,000 ft2 |