Physics

5) This print-out should have 30 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 0.0 points Figure ABCD is similar to figure EFGH. What is the length of EF ?

H A 3 B E

1

4.

5 10

10

5.

5

10 10 9

D

C G 25 F

Your answer must be within ± 1.0% 002 0.0 points A 12 12 6.

8 8 6

11

C 8 Which triangle is similar to triangle ABC? B 7.

11

9

1.

15 9 7 10 9 8. 10 15

2. 10

8

14 9. 14 10

9 3. 11 9

cheung (cdc2879) – HW 00 – florin – (58445)

2

10.

10 10 7

003 0.0 points

Rewrite the expression 4 9

005 0.0 points Two cars travel the same distance. The first car travels at a rate of 35 mph and reaches its destination in t hours. The second car travels at a rate of 53 mph and reaches its destination in 3.3 hours earlier than the first car. How long does it take for the first car to reach its destination? Answer in units of hours Your answer must be within ± 1.0% 006 Find x when 3x + 2y = 8 4x + 7y = 3 1. x = 4 51 13 48 3. x = 13 50 4. x = 13 49 5. x = 13 2. x = 007 (part 1 of 2) 0.0 points A rectangular hole 4 cm wide and x cm long is cut in a rectangular sheet of metal 6 cm wide and y cm long. The length of the hole is 8 cm less than the length of the metal sheet. After the hole is cut, the area of the remaining metal is 50 cm2 . 0.0 points

x =

3 6 − 2 7

with a single fraction on the right. 1. x = 2. x = 3. x = 4. x = 5. x = 2 3 55 81 58 81 56 81 19 27

004 0.0 points Solve the linear equation 1 3 7 x − (x + 5) = x . 3 3 7 1. x = 2. x = 3. x = 4. x = 5. x = 106 99 35 33 107 99 104 99 103 99

4 x

6

y Find the length of the hole. Answer in units of cm Your answer must be within ± 1.0% 008 (part 2 of 2) 0.0 points

cheung (cdc2879) – HW 00 – florin – (58445) Find the length of the metal sheet. Answer in units of cm Your answer must be within ± 1.0% 009 0.0 points Two planes start from the same airport and fly in opposite...