(PLEASE HELP FAST!!!) Which expression gives the area of triangle QRS?
1 answer:
The expression which gives the area of triangle QRS is .
We need to find the area of triangle QRS.
<h3>How do I find the area of a triangle using trigonometry?</h3>The area of a triangle can be expressed using the lengths of two sides and the sine of the included angle. Area of Δ = ½ ab sin C.
Now, the area of the triangle QRS
Therefore, the expression which gives the area of triangle QRS is .
To learn more about the area of a triangle using trigonometric ratios visit:
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The problem can be solved step by step, if we know certain basic rules of summation. Following rules assume summation limits are identical.
Armed with the above rules, we can split up the summation into simple terms:
=> (a) f(x)=28n-n^2
=> f'(x)=28-2n
=> at f'(x)=0 => x=14
Since f''(x)=-2 <0 therefore f(14) is a maximum
(b) f(x) is a maximum when n=14
(c) the maximum value of f(x) is f(14)=196
Armed with the above rules, we can split up the summation into simple terms:
=> (a) f(x)=28n-n^2
=> f'(x)=28-2n
=> at f'(x)=0 => x=14
Since f''(x)=-2 <0 therefore f(14) is a maximum
(b) f(x) is a maximum when n=14
(c) the maximum value of f(x) is f(14)=196
Answer:
0.4 or
Step-by-step explanation:
James spun the arrow 30 times which means 30 is the total. In other words, it's your denominator (). It landed on the blue section 12 times which means 12 is the part of the whole. In other words, it's your numerator (
). Plug in the entire fraction and you get
. Divide 12 by 30 and you get 0.4 or if you divide both the numerator & denominator by 6, you get
. Either one works, depending on what your question asks for.