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kumpel [21]
3 years ago
11

The area of a rectangular wall of a barn is 192 sq. Ft. It's length is 8 ft. Longer than twice it's width. Find the length and w

idth of the wall of the barn?
Mathematics
1 answer:
Novay_Z [31]3 years ago
6 0

Answer: length = 24 ft

Width = 8 ft

Step-by-step explanation:

Let L represent the length of the barn.

Let W represent the width of the barn.

The area of a rectangular wall of a barn is 192 sq. Ft. This means that

LW = 192- - - - - - - - - - - - - - -1

It's length is 8 ft longer than twice it's width. This means that

L = 2W + 8

Substituting L = 2W + 8 into equation 1, it becomes

W(2W + 8) = 192

2W² + 8W = 192

2W² + 8W - 192 = 0

Dividing through by 2, it becomes

W² + 4W - 96 = 0

W² + 12W - 8W - 96 = 0

W(W + 12) - 8(W + 12) = 0

(W - 8)(W + 12) = 0

W = 8 or W = - 12

Since the width cannot be negative, then W = 8

L = 192/W = 192/8

L = 24

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In which number does the digit 4 have a value that is 10 times as great as the value of the digit 4 in 348,971? 284,796 or 327,4
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Answer:

The number is 492,875.

Step-by-step explanation:

Given:

A number that is = 348,971

Place value of 4 = 40,000

Place value is ten thousands.

We have to identify the number where the place value of 4 is 10 times of the given number.

Numbers given:

284,796 or 327,498 or 492,875 and 742,186.

Lets see the place value of 4 in each of the number.

⇒

  • 284,796 place value of 4 is 4,000.
  • Place value of 4 is thousands.

⇒

  • 327,498 place value of 4 is 400 .
  • Place value of 4 is hundreds.

⇒

  • 492,875 place value of 4 is 4,00,000.
  • Place value of 4 is hundred thousands.

⇒

  • 742,186 place value of 4 is 40,000.
  • Place value of 4 is ten thousands.

Notes:

Ten thousands multiplied with ten is hundreds thousand.

⇒ 10,000\times 10 =1,00,000

So,

The number which has digit 4 as hundred thousands place values is 492,875.

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3 years ago
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