Answer:
Name: ________________________ Class: ___________________ Date: __________ ID: A
Math 9 - Chapters 8 and 9 Review
Multiple Choice
Identify the choice that best completes the statement or answers the question.
1. Solve the following: 5s 4 22.
a. s=2.4
b. s=3.6
c. s=18
d. s=22
2. Solve 7.2 b 6.4 43.12.
a. b=5.1
b. b=6.88
c. b=13.6
d. b = 29.52
3. Solve 4.6(2.5a 2) 6.9.
a. a=1.4
b. a=2.76
c. a=23.0
d. a=3.56
4. Solve 2.3t 5t 9.99.
a. t = –1.37
b. t=1.37
c. t=3.7
d. t=4.34
6.
7.
8.
Brenda got a mark of 18 on her test. This mark was equal to 72%. How many marks was the test worth?
a. 24
b. 25 c. 30 d. 100
Anapplehas5mgofvitaminC.Abananahas2 mg more than twice the amount of vitamin C of an apple. If an orange has 3.5 times as much vitamin C as a banana, how much vitamin C does an orange have?
a. 7mg
b. 12mg
c. 24.5 mg
d. 42mg
The statement “The boy appears to be at least 10 years old” can be represented by the inequality a. a10
b. a10
c. a10 d. a10
Which inequality represents the statement, “The pilot was less than 1.9 m tall”?
a. h1.9
b. h1.9
c. h1.9 d. h1.9
4 1
5. Solve5w4.813.24w. 9.
a. w=8
b. w=8.4
c. w=16
d. w=18
10. Express the inequality algebraically.
a. x12 b. x12
c. x12 d. x12
1
Step-by-step explanation:
Answer:
The number is -9
Step-by-step explanation:
Let the number be x
Therefore, 16 + 5x = -29
5x = -45
x = -9
The number is <u>-</u><u>9</u>
Answer:
answer is 0.15 tell me if ot is right
Answer:
x > 0 and y < 2
Step-by-step explanation:
By definition the inverse of a function is simply, when the domain and range are swapped. So if the domain of g(x) is x < 2 and y > 0, then the inverse will have these swapped. So x > 0 and y < 2
