Answer:

Step-by-step explanation:
1. The situation after 15 min:
(a) Distance travelled by simulated biker:
15 min =¼ h

(b) Distance travelled by Julian
Julian is 2¼ km behind the biker. The distance he has travelled is (5 - 2¼) km
5 - 2¼ = 5 - ⁹/₄ = ²⁰/₄ - ⁹/₄ = ¹¹/₄ = 2¾
Julian has travelled 2¾ km in ¼ h.
2. Julian's average speed

B. Yes, (1,4) is a solution
Answer:
<em>options: A,C,E </em>are correct.
Step-by-step explanation:
We have to find the expression equivalent to the expression:

we know that: 
Hence,
-----(1)
A)
(same as(1))
Hence, option A is correct.
B) 7 ; which is a different expression from (1)
Option B is incorrect.
C)
(Same as (1))
Option C is correct.
D)
which is a different expression from (1)
Hence, option D is incorrect.
E)
; which is same as (1)
Hence, Option E is correct.
F)
; which is not same as expression (1)
Hence, option F is incorrect.
Answer:
no, like what you want to like
Step-by-step explanation: