MATHEMATICS MIDDLE SCHOOL

starting at the top if you cut a square pyramid in half using a single cut, what is the shapes of the newly-exposed section?

Answers

Answer 1
Answer:

If you cut a squarepyramid in half using a single cut that passes through the apex (top) and the center of the square base, the newly-exposed section will be a triangle.

What is a pyramid?

A pyramid is a structure where outer surfaces are triangular and converge to a point at the top.

The volume of a pyramid with a square base is given as:

Volume = 1/3 x base area x height

We have,

The triangle will have the same shape as the base of the pyramid, with its vertices at the midpoints of three of the original pyramid's edges.

Each of these edges will be bisected by the cut, so the triangle will have the same perimeter as the base of the pyramid, but its area will be half that of the base.

The remaining half of the pyramid will also be a triangularpyramid with the same base and congruent triangular faces.

Thus,

If you cut a squarepyramid in half using a single cut that passes through the apex (top) and the center of the square base, the newly-exposed section will be a triangle.

Learn more about pyramid here:

brainly.com/question/17615619

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Answer 2
Answer: if its a square and you cut it in half you get should get a rectangle. 

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I don’t know
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Iiiiiii I I I I I I I I I I I I I I I I I I I I did d d d d
A: around 32 to 33 men, using proportions I know that .65 of the people surveyed were men making it 130 men. Out of those 130, .25 like to play sports, so I multiplied 130x.25 to get 32.5 men, however we can’t can’t have half a male right?!

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Answers

Given:
Red = 1/3
Blue = 1/4 
White = 5/12

1/3 + 1/4 + 5/12 ⇒ (1/3*4/4) + (1/4*3/3) + (5/12*1/1) ⇒ 4/12 + 3/12 + 5/12 = 12/12 =  1

Red: 4/12 = 0.33 ; Blue: 3/12 = 0.25 ; White: 5/12 = 0.42

Batch 1: 
Red : 5.95 * 0.33 = 1.9635 ⇒ 2
Blue: 5.95 * 0.25 = 1.4875 ⇒ 1.5 or 1 1/2
White 2 1/2 given:  2.5 / 0.42 = 5.95 total

Batch 2:
Red: 9 * 0.33 = 2.97 ⇒ 3
Blue: 2 1/4 given: 2.25 / 0.25 = 9
White: 9 * 0.42 = 3.78 ⇒ 3 3/4

Batch 3;
Red: 3 1/3 ⇒ 10/3 ÷ 0.33 = 10.10
Blue: 10.10 * 0.25 = 2.525 ⇒ 2 1/2
White: 10.10 * 0.42 = 4.242 ⇒ 4 1/6

What is the LCM of 18 and 45 ?

Answers


Their least common multiple is  90 .

90 = 5 x 18

90 = 2 x 45

Please help me with this

Answers

Answer: D

Step-by-step explanation:

A= π*r² = π*7.3² ≈ 167.4154725

If each runner runs 1/3 mile, how many runners must be on a team?

Answers

That depends on the total distance of the race, which you
have not bothered to mention.

If the team has exactly enough runners to run the entire race,
one at a time, then the number of runners needed is ...
 
             (3) times (the total distance of the race, in miles) .

A circular swimming pool holds 1.22 x 10^6 cubic inches of water. It is being filled at a rate of 1.5 x 10^3 cubic inches per minute. How many hours will it take to fill the swimming pool?

Answers

You can set up a proportion:
1.5*10^3/1=1.22*10^6/x
Cross multiply:
1.22*10^6=1.5*10^3x
Solve for x:
x=(1.22*10^6)/(1.5*10^3)
x≈813.33
Now, Divide 813.33 by 60 because the question asks for hours, not minutes:
813.33/60≈13.56
So it will take approximately 13.56 hours for them to finish filling up the swimming pool.
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Becky and Tommy are asked to solve −4x − 25 = 8x + 15. Identify where one of them made an error. Becky Tommy −4x − 25 = 8x + 15 −4x − 25 − 8x = 8x + 15 − 8x −12x − 25 = 15 −12x − 25 + 25 = 15 + 25 −12x = 40 Negative 12x over 40 equals 40 over 40 x=negative three-tenths −4x − 25 = 8x + 15 −4x − 25 + 4x = 8x + 15 + 4x −25 = 12x + 15 −25 − 15 = 12x + 15 − 15 −40 = 12x negative 40 over 12 equals 12x over 12 x=negative ten-thirds