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:
10 trips
Step-by-step explanation:
He wants 23 km total, and each trip is 1 km.
He already has 13 km, so all you need to do is 23-13=10, so he needs 10 trips
Answer:
4.5
Step-by-step explanation:
162/360=0.45
0.45*10=4.5
500 because in a normal distribution 50% of the total falls below the mean
