If 400 bricks, each measuring 81" by 31", are required to build a wall 42 feet high, how long is the wall?

Mathematics

2 answers:

JulsSmile [24]3 years ago

6 0

Answer:

166

Step-by-step explanation:

The person above calculated inches. Need to take 1992.85 and divide by 12 to get 166

Arisa [49]3 years ago

3 0

81 x 31 = 2 511 (area of a brick)

2511 x 400 = 1 004 400 (area of the wall)

Convert 1 004 400" to ft. [1ft. = 12"]

1 004 400 / 12 = 83 700 ft.

Now this is what we have.

-Hight 42 ft.

-Length X ft.

-Area 83 700ft.

Algebra time.

42 x X = 83 700 (to get X you would devide 83 700 by 42)

83 700 / 42 = 1 992.85ft. (X = 1 992.85ft.)

So the length of the wall would be 1992.85ft.

You might be interested in

Will give brainiest!!!

sashaice [31]

Answer:

616/2500

Step-by-step explanation: You first have to find the number of times a Blue marbles was chosen: 22

Then find the total number of marbles that were chosen. Make a fraction out of it: 22/50

You then see how many times tails was flipped: 28

Do the same thing again: 28/50

Then multiply the two fractions together:

22/50 * 28/50 = 616/2500

7 0

2 years ago

how many legs do 10 people have? if two people dont have legs. one person has 3 legs and one person has one leg. and mary has a

Ganezh [65]

So here is the answer. Normally, 10 people have 20 legs since each person has 2 legs each. But given the scenario that two people don't have legs, this would mean 20 minus 4, is 16 legs. Then one person has 3 legs, 16 plus 3 and it is 19. And then, another person has one leg, 19 plus 1 is 20. Therefore, the total legs would still be 20. Hope this helps. The dog does not count.

5 0

2 years ago

Read 2 more answers

High school <br> math/ geometry

Tamiku [17]

Answer:

Well a triangle itself is worth 180 degrees (Inteirior angles)

your given “a” “b” and you need to find c.

So you can subtract

A is 50

B is 55

<BCA= 180- 55-50