KariSupreme
15.11.2019 •
Mathematics
Select the correct answer. the number of oranges purchased varies directly as the price of the oranges. if 11 oranges cost $2.35, what is the cost of 18 oranges? a. $3.85 b. $85.71 c. $84.24 d. $2.35
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Ответ:
A. 3.85
Step-by-step explanation:
If 11 oranges cost $2.35, we could calculate the cost of each of these oranges, simply dividing the total cost ($2.35) between the amount of oranges bougth (11). This will give us the cost of a single orange, that is, the unitary cost= .Then, if we want to know the cost of 18 oranges, we just have to multiply the cost of a single orange (0.21) by 18: 0.21x18 = 2.85Ответ:
cone
Step-by-step explanation:
If in the image you can see that the vertex with the angle of 90° is in the (0,0), then, looking at only the changes in the other vertex, we have.
Before the rotation, we have one vertex in the x = 0 line, and other vertex in the y = 0 line.
After the rotation, the vertex in the y = 0 line will draw a circle, while the point in x= 0 will not do anything (because the point is colinear to the axis of rotation).
Then our figure has a circular base and ends on a point, connecting those figures we can se that the figure is a cone.