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OLEGan [10]
3 years ago
8

The price of a 5-minute call is 1.50 what is the price of a 12-minute call

Mathematics
2 answers:
nasty-shy [4]3 years ago
7 0

Answer:

3.70

Step-by-step explanation:

OLga [1]3 years ago
3 0
3.60

1.50/5 to figure out how much money is every minute which is $0.3

multiple 0.3 x 12 and you get $3.60
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Regular hexagon ABCDEF is shown below. Find the measure of angle x.
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ANSWER: 30

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A prism, bases of which are equilateral triangles, circumscribes a sphere of radius 6. What is the volume of the prism?
koban [17]

Answer:

  1296√3 cubic units

Step-by-step explanation:

The volume of the prism will be the product of its base area and its height. Since it circumscribes a sphere with diameter 12, that is the height of the prism.

The central cross section of the sphere is a circle of radius 6, and that will be the size of the incircle of the base. That is, the base will have an altitude of 3 times that incircle radius, and an edge length of 2√3 times that incircle radius. Hence the area of the triangular base is ...

  B = (1/2)(6×2√3)(6×3) = 108√3 . . . . . square units

The volume of the prism is then ...

  V = Bh = (108√3)(12) = 1296√3 . . . cubic units

_____

<em>Comment on the geometry</em>

The centroid of an equilateral triangle is also the incenter and the circumcenter. The distance of that center from any edge of the triangle is 1/3 the height of the triangle. So, for an inradius of 6, the triangle height is 3×6 = 18. The side length of an equilateral triangle is 2/√3 times the altitude, so is 12√3 units for this triangle.

6 0
3 years ago
What is 0.15 in word form
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Step-by-step explanation:

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