=> 4(7)–2(7+a)=8
<h3>=>28–14
<em>–</em>2a=8</h3><h3>=>14–2a=8</h3><h3>=>-2a=8–14</h3><h3>=>
<em>-</em>2a=-6</h3><h3>
<em>=>a=3</em></h3>
Answer:
net force is the force used to push or pull the box
Step-by-step explanation:
for example-
==> 15N BOX 12N <==
15-12=3
3N
if they point the same way add if they point the opposite subtract
Answer is b !!!!!!!!!!!!!!
Comment
You can do this a number of ways.
The first way is to set up a proportion. That's very formal, and is most respected.
Proportion.
x / 60 = 1 / 10 The proportion is reduced by a factor of 10. Cross Multiply.
10 * x = 60 * 1
10x = 60 Divide by 10
x = 60/10
x = 6
Multiply by the scale factor.
Beginning number * scale factor = Final result.
60 * 1/10 = Final Result
60 * 1 / 10 = Final Result
Final Result = 6
This method words even when the numbers are quite complicated.
