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3 years ago

Which types of polygons are the faces of a dodecahedron?

Mathematics

2 answers:

n200080 [17]3 years ago

8 0

C is the correct answer

Vlad [161]3 years ago

4 0

Answer:

regular pentagons

Step-by-step explanation:

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Jamal and Samuel are saving for a camping trip. Jamal starts with $18 and saves $5 each week. Samuel starts with $10 and saves $

TiliK225 [7]

Answer:

Jamal :

have = $18

need = $46-$18

= $28

saves = $5 each week

= $5 × 5 weeks

= $25 ( not enough )

Samuel :

have = $10

need = $46 - $10

= $36

saves = $7 each week

= $7 × 5 weeks

= $35 ( not enough )

thus, both boys would not have enough money to pay for the trip .

6 0

2 years ago

On a snow day, Owen created two snowmen in his backyard. Snowman A was built to

faust18 [17]

Answer:

The equations for each function:

A(t) = 60 - 6t
B(t) = 42 - 3t

The lines plotted, see attached

The point at which both the snowmen have same height:

60 - 6t = 42 - 3t
6t - 3t = 60 - 42
3t = 18
t = 6

The required interval is

t = [0, 6)

7 0

2 years ago

a toy manufacturer has designed a new piece for use in building models. It is a cube with side lengths 7 mm and has a 3 mm in di

Ray Of Light [21]

Given that the cubical piece has side (s) 7 mm, and a cylindrical hole of diameter (d) as 3 mm.

The volume of the piece can be calculated as,

$\begin{gathered} \text{Volume of piece}=\text{ Volume of cube}-\text{ Volume of cylinder} \\ V=s^3-\frac{\pi}{4}d^2s \\ V=7^3-\frac{\pi}{4}(3)^2(7) \\ V=343-\frac{63\pi}{4} \\ V\approx293.52mm^3 \\ V\approx293.52\times10^{-9}\text{ }m^3 \end{gathered}$

It is mentioned that the material costs $207 per cubic meter, so the cost (c) of 1 piece is calculated as,

$\begin{gathered} \text{Cost of 1 piece}=\text{ Cost per unit volume}\times\text{ Volume of 1 piece} \\ c=207\times293.52\times10^{-9} \\ c\approx60758.64\times10^{-9} \end{gathered}$

This is the cost (in dollars) for 1 piece.

Given that the manufacturer wants to produce 1,000,000 such pieces, so the total cost (TC) is calculated as,

$\begin{gathered} \text{Total Cost}=\text{ Cost per piece}\times\text{ No. of pieces} \\ TC=60758.64\times10^{-9}\times1,000,000 \\ TC=60758.64\times10^{-9}\times10^6 \\ TC=60758.64\times10^{-3} \\ TC=60.75864 \\ TC\approx60.75 \end{gathered}$

Thus, the total prototypes will cost around $60.75

7 0

11 months ago

What is the area of the composite figure? D) 48 cm

arlik [135]

Answer:

The answer is c

Step-by-step explanation:

C.88cm

5 0

2 years ago

True or false the expression 24 - 2x + 3y has three terms

Stells [14]

I believe the answer is false

3 0

2 years ago