6. Do the following (chapter 11):
7. Translate and solve the following word problems:
a. A 10 foot ladder is leaning against a house and the bottom of the ladder is
6 feet from the building. How high is the ladder on the house? (Round to
nearest tenth).
b. The temperature in Seattle at 6 am is 52oF. At 11 am a storm rolls in and
temperature drops by 15 degrees. At 7 pm, the temperature rises 11
degrees. What is the final temperature?
c. The angle of a triangular park is four times as large as the first. The third
angle is 45o less than the sum of the first two angles. What are the
angles?
2
53
a. Use < or >: - ? -
94
b. Use < or >: .67 ? -.82
c. - |-2.56|
5
d. Express - in decimal notation
7
3
e. What is the reciprocal of -
7
f. Simplify: -2(-8) - 3(4)4
g.
-
éù
--
ëû
39
- -
510
¸
5x
a. Evaluate - when x = 2 and y = 3
2y
b. Multiply -(-5x + 2)
c. Factor 6x - 36
d. Combine like terms: 3x + 5 - 4
y - 6x - y - 3
2
e. Solve: x - 3 = 5
5
f. Solve: -2x
- (3x - 4) = 6