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creativ13 [48]
3 years ago
7

9. If 3/4 of a ton of sand covers 2/5 of a playground, how many tons of sand are required to cover the entire playground

Mathematics
1 answer:
Lynna [10]3 years ago
6 0
1 7/8 tons of sand will be required to fill the playground

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Factorize that x^4+4y^4​
ipn [44]

Answer:

  • (x² + 2y² + 2xy)(x² + 2y² - 2xy)

Step-by-step explanation:

<h3>Given binomial:</h3>

x⁴ + 4y⁴

In order to factorize it, follow the steps:

<h3>Complete the square:</h3>

  • x⁴ + 4y⁴ =
  • (x²)² + 2*(x²)*(2y²) + (2y²)² - 2*(x²)*(2y²) =
  • (x² + 2y²)² - (2xy)² =
  • (x² + 2y² + 2xy)(x² + 2y² - 2xy)

Used identities:

  • (a + b)² = a² + 2ab + b²
  • a² - b² = (a + b)(a - b)
4 0
2 years ago
Work out 3/4 + 4/7 what is the answer to this question
worty [1.4K]

Answer:

1 and 9/28

Step-by-step explanation:

you need to put everything over the same denominator

21/28+16/28=37/28

this can be written as  1 9/28

7 0
3 years ago
If point A is located at (-7,5) and is rotated around 270 clockwise about the origin, then point A' is located at...
jonny [76]

Answer:

B.(-5,-7)

Step-by-step explanation:

According to the rule of rotation if you were to have a 270* clockwise you would first switch the x and y values. Ex: (-7,5) -> (5,-7). next you would make the original y coordinate a negative. (5,-7) -> (-5,-7).

6 0
3 years ago
What fraction is the greatest in this row? 12/4, 4/4, 2 2 / 4, 1/4. also 2 2 /4 is a mixed number
kakasveta [241]

Answer:

12/4

Step-by-step explanation:

4/4 is 1

1/4 is well 1/4

2 2/4 is 2 1/2

12/4 is 3

the greatest fraction is 3

4 0
3 years ago
Read 2 more answers
. How do you do this.
inn [45]
Sin OH Cosin AH Tangent OA search "SOCAHTOA"
7 0
3 years ago
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