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rusak2 [61]
3 years ago
11

. explain the relationship of density to volume and mass

Mathematics
1 answer:
astraxan [27]3 years ago
7 0
D = m/v
m = d x v
v = m/d
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Question 1
Alexxx [7]

Answer:

Water needed for pool = 486 cubic feet

Plastic liner required for the pool = 298.3 feet

Step-by-step explanation:

Top view of the pool is a composite figure, having one rectangle and a trapezoid.

1). Water needed for the pool = volume of the pool

Volume of the pool = Area of the base × Depth

                               = (Area of the rectangle + Area of the trapezoid)× depth  

Area of the trapezoid = \frac{1}{2}(b_{1}+b_{2})\times h

                                    = \frac{1}{2}(11+9)\times (12-1.5)

                                    = 105 ft²

Area of the rectangle = Length × width

                                    = 11 × 1.5

                                    = 16.5 ft²

Now, volume of the pool = (105 + 16.5) × 4

                                          = 121.5 × 4

                                          = 486 cubic feet

b). Liner required = surface area of the pool excluding top

                             = Surface area of the walls + Area of the pool base

                             = (Perimeter of the pool) × depth + area of the base

                             = (12 + 11 + 1.5 + 10.7 + 9)×4 + 121.5

                             = 176.8 + 121.5

                             = 298.3 square feet

Therefore, amount of water required = 486 cubic feet

liner needed = 298.3 square feet                                  

8 0
3 years ago
What is the equation of the line that passes through the point (5,2) and has a slope<br> of –6/5
koban [17]

Answer:

5y+6x-40=0

Step-by-step explanation:

y-2=-6/5(x-5)

5y-10=-6(x-5)

5y-10=-6x+30

5y+6x-10-30=0

5y+6x-40=0

3 0
2 years ago
HELP ASAP
IrinaVladis [17]

Answer:

y-5=(x-6)?

Step-by-step explanation:

Hope this helped!

-BB

3 0
3 years ago
Choose the sentence that correctly uses pronouns.
Veronika [31]

Answer:

4

Step-by-step explanation:

5 0
3 years ago
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A hockey player strikes a hockey puck. The height of the puck increases until it reaches a maximum height of 3 feet, 55 feet awa
Juliette [100K]

Answer:

69

Step-by-step explanation:

55+14

7 0
3 years ago
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