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soldi70 [24.7K]
3 years ago
6

If it takes 3 men 2 hours to dig a hole, how long will it theoretically take one man?

Mathematics
2 answers:
navik [9.2K]3 years ago
7 0
It Will Take 1 Man 6 Hours To Dig The Hole
Hope This Helps!

mars1129 [50]3 years ago
4 0
I believe the answer is 5.

hope this helped!
brainliest plz?

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12. Find the surface area of each figure to the nearest tenth.
Zolol [24]

Answer:

  12a. 471.2 cm²

  12b. 60 m²

Step-by-step explanation:

Part A.

The surface area of each figure is the sum of the end area and the lateral area.

  <u>cylinder</u>

  S = (2)(πr²) +2πrh = 2πr(r +h)

  S = 2π(5 cm)(5 cm +10 cm) =150π cm² ≈ 471.2 cm²

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  <u>triangular prism</u>

  S = (2)(1/2)bh + PL . . . . b=triangle base; h=triangle height; P=triangle perimeter; L=length of prism

  S = (4 m)(1.5 m) + ((4 + 2·2.5) m)(6 m) = (6 + 54) m² = 60 m²

_____

Part B.

Surface area is useful in the real world wherever products are made from sheets of material or wherever coverings are applied.

Carpeting or other flooring, paint, wallpaper are all priced in terms of the area they cover, for example.

The amount of material used to make containers in the shapes shown will depend on the area of these containers (and any material required for seams).

6 0
3 years ago
How does the definition of the prefixes mono-,bi-, and tri- help when naming polynomials
Leviafan [203]

Answer:

They let you know the number of numbers there are/will be.

Step-by-step explanation:

Mono, being one, means there will only be one number is the equation.

Bi, being two, means there will be two numbers in the equation.

and tri, being three, means there are three numbers in the equation.

8 0
3 years ago
Read 2 more answers
Can someone help me find x of this triangle
uysha [10]

Answer:

x = 9

Step-by-step explanation:

Sum of a triangle is 180°.

6x + 1 + 6x - 14 + 9x + 4 = 180°

Arrange the like terms together and simply this equation.

6x + 6x + 9x + 1 + 4 - 14 = 180°

21x - 9 = 180°

Shifting '-9' to the other side of the equation gives you '+9'

21x = 180° + 9

21x = 189

Shifting 21 to the other side of the equation (to get x) makes it  ÷21 (multiply)

x = 189 ÷ 21

x = 9

3 0
3 years ago
Which of the five measures of center (the mean, the median, the trimmed mean, the weighted mean, and the mode) can be calculated
nalin [4]
 The mean and median can be calculated for quantitative data only.
4 0
3 years ago
On a coordinate grid, the coordinates of vertices P and Q for Polygon PQRS are P(5, 4) and Q(−2, 4). What is the length of Side
Sedaia [141]
The answer is c. 7 units .
7 0
2 years ago
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