Answer:19ohms
Explanation:
equivalent resistance=5+2+12
equivalent resistance=19ohms
 
        
             
        
        
        
Answer:
20 metres
Explanation:
<em>Speed</em><em> </em><em>=</em><em> </em><em>distance</em><em> </em><em>÷</em><em> </em><em>time</em>
<em> </em>
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</em>
If we substitute the values:

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<span>The cation is positively charged and has a charge twice that of the anion, for example +2.
The anion is negatively charged and in our example where the cation has a +2 charge, it must have a -1 charge.
In order for the charges to equal zero, there must be two anions: -1 x 2 = -2
So the answer is D. AX2</span>
        
                    
             
        
        
        
Answer: A and B 
Explanation:
took the test:) hope this helps