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Ber [7]
3 years ago
10

I will FREIND AND 10PTS

Mathematics
1 answer:
Step2247 [10]3 years ago
6 0
The answer is 6x + 0.50x= 2.50
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A FEW MATH QUESTIONS ! PLEASE EXPLAIN ANSWERS ! (:
7nadin3 [17]

answers

1) 70

2) 3,840

3) 24

4) 72


<u>Explanation</u>

Q1

The surface area of a cone is given by;

S.A = 2Πrl + Πr²

Where r is the radius of the base and l is the lateral height.

Πr² = area of the base = 20 in²

2Πrl = Area of the lateral surface

         = 2.5 × 20

          = 50

Area of the cone = 50 + 20

                            = 70 in²

Q2

The sides of the Pythagorean triangle with legs of 12 and 16.

The 3rd side will be;

c = √(12² + 16²)

  = √400 = 20

Volume = 12 × 16 × 20

              = 3,840

Q3

The volume of a cone is given by;

volume = 1/3 Π r² h

This shows that the volume of a cone is a third the volume of the cylinder.

∴ Volume of the cylinder = 12 × 3

                                            = 24 ft³

Q4

The volume of any regular figure is;

Volume = base area × height

When the dimensions area usually 3. Let these dimensions be x, y and z.

∴ volume  = x × y × z = 9

  Doubling the dimensions;

Volume = 2x × 2y × 2z = 2 × 2 × 2 × 9

             = 8 × xyz = 8 × 9

             = 72 ft²



3 0
3 years ago
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Factor the polynomial 8x² − 24x − 224 completely. help now!
IgorLugansk [536]

Answer:

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Step-by-step explanation:

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Kenidi is shopping for a couch with her dad and hears him ask the salesperson, "How much is your commission?"The salesperson say
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Step-by-step explanation:

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GEOMETRY PROBLEM HELP ME PLEASE
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Answer:

18. x=31

19.x=15

20. a. x=5 WXY= 28

b. YXZ=28

c. WXZ=56

6 0
2 years ago
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It takes you 39 seconds to walk from the first​ (ground) floor of a building to the third floor. how long will it take you to wa
nalin [4]
It will take you double the time, or 78 seconds.
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