Answer:
$224
Step-by-step explanation:
20 percent= 1/5
1/5 of 1120=1120 divided by 5
dividing by 5 is like dividing by ten and multiplying by two
1120 divided by 10 = 112
112*2=224
2 because she spent a total of $18 and the books each cost 6 times two will equal 18
The force is 1.6N and the distance between them is 1.3 meters
<h3>The force between them</h3>
An inverse variation from force to the square of distance is represented s:
k = Fd^2
Where k represents the variation constant
When F = 10, d = 2.
So, we have:
k = 10 * 2^2
k = 40
Substitute k = 40 in k = Fd^2
Fd^2 = 40
When d = 5, we have:
F * 5^2 = 40
This gives
25F = 40
Divide by 25
F = 1.6
Hence, the force is 1.6N
<h3>The distance between them</h3>
In (a), we have:
Fd^2 = 40
When F = 25, we have:
25 * d^2 = 40
This gives
25d^2 = 40
Divide by 25
d^2 = 1.6
Take the square root of both sides
d = 1.3
Hence, the distance between them is 1.3 meters
Read more about variation at:
brainly.com/question/14254277
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