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Zigmanuir [339]
3 years ago
13

Ty bought 420 pen for the school if there are 10 pen in the box how many box did he buy

Mathematics
1 answer:
mr_godi [17]3 years ago
3 0
This is a division question, to find the answer we need to divide the number of pens by the amount of pens in each box.
So 420 / 10 = 42

Ty bought 42 boxes
You might be interested in
Evaluate 50 + 0.5 ×(41 - 32)
Zarrin [17]
To solve this expression, we need to follow the order of operations (BEDMAS)

50+0.5(41-32)
=50+0.5(9)
=50+4.5
=54.5

Your answer is 54.5

7 0
3 years ago
The base of a prism has n sides. Find the numbers of faces, edges, and
Harman [31]

Answers:

  • faces = n+2
  • edges = 3n
  • vertices = 2n

===========================================================

Explanation:

Think of a hexagonal room with n = 6 walls, i.e. the floor is a hexagon with n = 6 sides. The floor and ceiling are parallel to each other, and congruent hexagons. That's 2 faces so far. Then we have another 6 faces to account for the walls. This gives 2+6 = 8 faces of a hexagonal prism.

In more general terms, a prism with a base of n sides will have 2 parallel and congruent base faces, and n walls or lateral faces. This gives n+2 total faces.

------------------------

Let's go back to the hexagonal prism. The floor has 6 sides to it, and so does the ceiling. We have 6+6 = 12 edges so far. Then we have another 6 edges where each of the rectangular walls meet up. That gives 12+6 = 18 edges total of this hexagonal prism room.

For any more general case, each base has n sides. That gives 2n sides so far for just the bases. Then add on another n for the lateral edges and we get 3n total edges.

--------------------------

Once again lets revisit the room with the hexagonal floor and ceiling. The floor has 6 vertices and the ceiling has the same vertex count. Therefore, this prism has 6+6 = 12 vertices.

For the general case, each base has n vertices. There are 2 such identical bases giving 2n vertices total.

---------------------------

One way to check the answer:

We could use Euler's Polyhedron Formula which is

F+V-E = 2

where,

  • F = number of faces
  • V = number of vertices
  • E = number of edges

For the hexagonal prism we found

  • F = 8
  • V = 12
  • E = 18

Then notice how

F+V-E = 2

8+12-18 = 2

20-18 = 2

2 = 2

This confirms the formula works for a hexagonal prism.

Now let's check it for the more general case

We found earlier that,

  • F = n+2
  • V = 2n
  • E = 3n

So,

F+V-E = 2

n+2+2n-3n = 2

3n-3n+2 = 2

0n+2 = 2

0+2 = 2

2 = 2

This helps confirm the answer for any prism with the base of n sides.

4 0
2 years ago
Help plz i need help PLZ I HAVE A MATH TEST :(((((((((((
Naddik [55]

اختي هلق اذا نزلنا من الزاوية الثانية خط منحسن نلاقي مستطيل ونحيب مساحته ويلي هية ١٢ متر مربع

بعدين منطلع الضلعين الموجودين يلي لح يكونو نفس القيمة

يعني هوو كمان مستطيل ١٤×٤=٥٦

٥٦+١٢=٦٨

يعني الجواب ٦٨ متر مربع ان شاء الله يكون صح لاني حليته نظرياً

3 0
3 years ago
Read 2 more answers
A circle has a diameter of 4 inches. Which statement about the area and circumference of the circle is true?
hoa [83]
Only the second one
when diameter is 4 r=2
so 2pi*2=2²*pi the first is circumference the second area
7 0
3 years ago
PLS HELP ME
s2008m [1.1K]
The students on the right hand side had better overall results

There were less people on the left hand side of the room this affects the average even with the right hand side having two zeros, another thing which the left hand side didn’t have.

Hope I helped
3 0
2 years ago
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