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pickupchik [31]
3 years ago
12

The amount of postage placed on a first class letter depends on the weight of the letter .

Mathematics
1 answer:
Leviafan [203]3 years ago
3 0
Amount is directly proportional to weight
thus
A = kw               A  =  amount
                           k  = constant      ^    which is price per gram
                           w =  weight
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CLAY A potter crafts a triangular prism out of clay.
Shtirlitz [24]

Answer:

216 cm^3

Step-by-step explanation:

I am assuming this is a right triangular prism

V = area of the base * height

We need to find the area of the triangular base

A triangle = 1/2 b*h

                = 1/2 (12)4

                = 24

Substituting this into the volume equation

V = 24 * 9

   216 cm^3

8 0
3 years ago
Bill has lost 40<br>pounds in 8<br>weeks. What is<br>his weekly rate?​
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Answer:

5 pounds

Step-by-step explanation:

40 divided by 8 = 5

6 0
3 years ago
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Solve this math problem -2 1/3-(-5)= ​
dmitriy555 [2]

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4 0
2 years ago
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Solve for x (5x-3)/4 = x/3 + 1 and please show working out
Mila [183]
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4 0
3 years ago
The washer in the image has an inner diameter of 1/4 inch. The outer diameter measures 3/4 inch, and the washer is 1/4 inch thic
Talja [164]

Answer:

  0.14 lb . . .  closest choice is 0.11 lb

Step-by-step explanation:

The inside and outside radii are 1/8 in and 3/8 in, respectively. Then the area of the top of the washer is ...

  A = π(R² -r²) = π((3/8)² -(1/8)²) = π(9/64 -1/64) = π/8 . . . square inches

The height of the stack of 5 washers will be 5×(1/4 in) = 5/4 in. So, the volume of material in the stack of washers is ...

  V = Bh = (π/8)(5/4) = 5π/32 . . . cubic inches

The weight of material is the product of volume and density, so is ...

  W = (5π/32 in³)(0.285 lb/in³) ≈ 0.1399 lb ≈ 0.14 lb

_____

<em>Comment on the question</em>

Since this answer does not correspond to any of the offered choices, we suggest you ask your teacher to work this out for you. We suspect they will have difficulty justifying any of the answer choices shown here. (0.11 lb corresponds to 4 washers, not 5.)

5 0
3 years ago
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