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Ksivusya [100]
2 years ago
13

What is 71,781 divided by 8​

Mathematics
1 answer:
Mashutka [201]2 years ago
7 0
The answer is 8,972.625
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The length of a rectangular floor is 4 feet longer than its width w. The area of the floor is 525 ft^2.
andre [41]

Answer:

  • 525 = (w+4)(w)
  • 21 ft by 25 ft

Step-by-step explanation:

Let w represent the width of the floor. Then the length of the floor is (w+4) and its area is ...

  A = LW

  525 = (w+4)(w)

  w^2 +4w -525 = 0

  (w -21)(w +25) = 0 . . . . factor the above

Solutions are ...

  w = 21, w = -25

We are interested in the positive solution: w = 21.

The floor is 21 feet wide and 25 feet long.

_____

<em>Alternate solution</em>

Sometimes, when the factors aren't obvious, it works well to write an equation for the average of the dimensions. Here, we can represent that with x, and use (x-2) for the width, and (x+2) for the length. Then we have ...

  525 = (x-2)(x+2) = x^2 -4

  529 = x^2

  √529 = 23 = x

Then w=23 -2 = 21, and the length is w+4 = 25.

7 0
3 years ago
Read 2 more answers
Hello what is the answer please 5+30÷10=
Brilliant_brown [7]

Answer:

Mizuki is here to help! The answer is 8!

Step-by-step explanation:

5 + 30 ÷ 10 =

5 + 3 =

8

Remember PEMDAS!

8 0
3 years ago
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Please help, and plz don't be saying this is the right answer if u dont know for sure.
Andru [333]
It will be 9x + 1 = 12x + 20.

The answer you’ll put in the box is 1, because it doesn’t ask you to solve for x, just fill in the number.
4 0
3 years ago
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The lions won 16 games last year. This year the lions won 20 games. What is the percentage increase in the number of games the l
navik [9.2K]

Answer:

25%

Step-by-step explanation:

20/16=1.25

With the ".25" in the answer being the percentage increase

8 0
2 years ago
Rob won 61 super bouncy balls playing
Airida [17]
61 / 4 = will be 15 so he haves 15 friends
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2 years ago
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