Given:
The function is:
To find:
The all the real and non-real roots of the given function.
Solution:
We have,
For roots, ,
Taking square root on both sides, we get
The roots of the given function are -7i and 7i.
Therefore, the correct option is B.
Answer:
18%
Step-by-step explanation:
Step 1: We make the assumption that 90 is 100% since it is our output value.
Step 2: We next represent the value we seek with x
Step 3: From step 1, it follows that 100%=90
Step 4: In the same vein, x%=16.2
Step 5: This gives us a pair of simple equations:
Step 6: By simply dividing equation 1 by equation 2 and taking note of the fact that both the LHS
(left hand side) of both equations have the same unit (%); we have
Step 7: Taking the inverse (or reciprocal) of both sides yields
Therefore, 16.2 is 18% of 90
You would round 33.71 to 34 and 17.25 to 17 so you have 34-17=17
Answer:
I hope this is what you're looking for. Hope this helps.