In integers subtraction and addition are almost same ....
Addition :in addition if both numbers have different signs ..i.e - and + then we would find the difference and put the greater number sign ...For eg:(-6) + 12 =6 ...
<span> if both are same ..i.e if both are either positive(+) or negative(-) then you add(or find the sum) and put the common sign ... For eg :+5+10 = +15 and (-5) + (-10) = (-5)]
Subtraction: in subtraction what you do is changing the sign of the second number ...and then depending upon the both signs follow the rules of addition ...
for eg: 6 - 4 ..it becomes 6 + (-4) ...so as they have different signs we can subtract them and put the greater number sign ...
i.e, 6 + (-4) = 2 ...
To find the sum follow these rules ......mentioned above ....
u can ask if you have any doubt ....
Hope it helps !!!
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Answer:
2nd choice
Step-by-step explanation:
Horizontal distance = x
angle = α,
tanα = 15/x, so x = 15/tanα
For A, α = 42°, x = 15/tan42° = 16.66 miles
For B, α = 44°, x = 15/tan44° = 15.53 miles
so the answer is 2nd choice
Answer:
13+2n
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Answer:
the first one
Step-by-step explanation:
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