2а + 20 = -3а - 5 pls help
2 answers:
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Keywords:
<em>Function, variable, total cost, percentage, jeans </em>
For this case we have a function of the form, where
represents the total cost of buying a pair of jeans, considering that they are 20% below the regular price given by the variable x.
So, if the pair of jeans costs x, we look for 20% of x.
x -----------> 100%
? -----------> 20%
Where "?" represents 20% of x. So, we have:
Thus, 0.2x represents the reduction of the total cost of the pair of jeans
Then, the function that gives the total cost of the pair of jeans, with a reduction of 20% is:
Answer:
Option C
stated method in question is wrong!
<u>Step-by-step explanation:</u>
We need to find the general solution of x ! for the equation
⇒
⇒
⇒
Now , we know that
⇒
⇒
Now , we know that
⇒
⇒
⇒
⇒ ......(1)
General solution of Tan x is : , \
Here , from equation (1) we get . Hence general solution is :
⇒ .Therefore , stated method in question is wrong!
