Answer:
Step-by-step explanation:
We are given 
, 
and 
are zeros of the function. We can use the sum and product of roots. You may have come across these equations before ↓
Since the coefficients are already in a, b, and c's, we do not need to sub in anything else.
Now, you are asked to evaluate 
. The next step after finding the roots above ↑, is to factorise this equation to be solved.
= 
Sub in each respective roots,
= 
=
Hope this helped! Ask me if there's any part of the working you don't understand :)
Answer:
Step-by-step explanation:
In any right triangle, the cosine of an angle is equal to its adjacent side divided by the hypotenuse, or longest side, of the triangle.
Therefore, we have:
#10:
15·12=180
180÷3=60
60·22=1,320
Answer: The range of the given data is $120.
Step-by-step explanation:
For a set of observations, we know that the range of the set is given by:-
In the given data , the largest data value= $212
The smallest value= $92
Therefore, the range of the given observations is given by:-
Hence, the range of the given data is $120.
Answer:
52.85
Step-by-step explanation:
perimeter of the rectangle is 40
perimeter of the half circle is 12.85
add those two together and get 52.85
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