Answer:
sim eu também preciso desta respota
Answer:
We can easily solve this problem by plotting the equation with a grpahing calculator. Please see attached image.
Define the key features of the graph of the provided absolute value function.
Even function. The graph is inverted, if we compare it to the absoluted value of |x| thanks to the minus sign. It is also shifted up because we are adding +4
Provide the coordinate of the vertex and two additional points on the graph.
Coordinate of the vertex
V = (x,y) = (0,4)
Points where the graph crosses x - axis
(-4,0)
(4, 0)
Use the coordinate of the function’s vertex to prove the domain and range of the function.
Domain
All real numbers
Range
(-∞, 4]
We find the base of the rectangles by taking the difference between the interval endpoints, and dividing by 2.
Base of rectangle = (6 - 2) / 2
= 2
The area of the first rectangle:
(4 - 2)f(4) = 2[4 + cos(4π)]
The area the second triangle:
(6 - 4)f(6) = 2[6 + cos(6π)]
Now just compute the two areas and combined them. That will give you the estimated under the curve.
To evaluate the midpoint of each rectangle, we take the midpoint of the base lengths of each rectangle. This midpoint is the x value. Then evaluate the function at that x value.
The midpoint of the first rectangle is x=3. Evaluate f(3).
The midpoint of the second rectangle is x=5. Evaluate f(5).
Answer:
option: D is correct. ( (D) a markup of 15% on selling price is equivalent to a 85% markup on cost ).
Step-by-step explanation:
" Markup is the percentage difference between a product's cost and its selling price "
Since we are asked to Convert a markup of 15% on selling price to its equivalent markup on cost.
As there is a markup of 15% on selling price. Hence the cost of the product would be (100-15)%=85% of the selling price.
<em>Hence, a markup of 15% on selling price is equivalent to a 85% markup on cost.</em>
<em>Hence, option D is true.</em>