<h2>
The required "option A) 20" is correct.</h2>
Step-by-step explanation:
Let x be the smaller than 4 ×
.
To find, the number of times smaller is 2 ×
than 4 ×
= ?
∴ x = 
= 2 ×
× 
Using the identity,

= 2 × 
Using the identity,

= 2 × 
= 2 × 10
= 20
Thus, the required "option A) 20" is correct.
Answer:
A
Step-by-step explanation:
because I mean u have to no what's a function and what's not a function is when the lines don't touch and a non function is when that do
First:
F=m.a
=4*7
=28N
Second:
F=m.a
28=m.2. (force is constant,so F=28N)
28/2=m
m=14kg.
The answer is B
step by step explanation: