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Vanyuwa [196]
2 years ago
8

Maths find x in this equation

Mathematics
2 answers:
Anit [1.1K]2 years ago
5 0

Answer:

x = \frac{4b}{2+a-b}

Step-by-step explanation:

x(2 + a) = b(x + 4) ← distribute parenthesis on both sides )

2x + ax = bx + 4b ( subtract bx from both sides )

2x + ax - bx = 4b ← factor out x from each term on the left side

x(2 + a - b) = 4b ← divide both sides by (2 + a - b)

x = \frac{4b}{2+a-b}

Alborosie2 years ago
4 0

Answer:

<u>x = 4b / (2 + a - b)</u>

Step-by-step explanation:

Given :

  • x (2 + a) = b(x + 4)

Distribute the terms on both sides :

  • x(2) + x(a) = b(x) + b(4)
  • 2x + ax = bx + 4b

Bring the x terms to one side :

  • 2x + ax - bx = bx + 4b - bx
  • 2x + ax - bx = 4b

Take x as a common factor on the left side :

  • x (2 + a - b) = 4b

Divide both sides by (2 + a - b) :

  • x (2 + a - b) / (2 + a - b) = 4b / (2 + a - b)
  • <u>x = 4b / (2 + a - b)</u>
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I did problems like that by marking the coordinates. For example it says A was at (2.3), so you’d go over 2 and up 3. Then you’d do the same for points B and C. After that you would connect the dots with lines, and it would show that both triangles are the same size meaning that it couldn’t be a dilation, since that would make the triangle be either bigger or smaller in size. The triangles would be facing the same direction, so it couldn’t be reflected over anything or rotated. The answer would be D) translation, because the image of the triangle was translated to the right 2 and up 2 for all of the points.
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4 years ago
2.4 statistics A clothing store has a certain shirt in 4 sizes: small, medium, large, and extra large. If it has 2 small, 3 medi
nexus9112 [7]

Answer:

360,360

Step-by-step explanation:

This is called a Permutation with repetition, we want to know in how many ways we can arrange a certain ammount of elements (normal permutation), BUT some of those elements are identical.

The formula we use in these cases is:

\frac{n!}{n1!*n2!*...*ni!}

where n is the total amount of elements, n1 is the amount of repeated elements of the type 1, n2 is the amount of repeated elements of the type 2, ni is the amount of repeated elements of the type i.

In this particular case we have:

n=13 (total amount of shirts)

n1=2 (small shirts)

n2=3 (medium shirts)

n3=6 (large)

n4=2 (extra large)

then the amount of orders the shirts can be sold at (arranged) is:

\frac{13!}{2!*3!*6!*2!}=360,360

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3 years ago
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adoni [48]
<h2>Answer: </h2><h2>Mohammed's net pay each week is $298.90 (61%).</h2>

Step-by-step explanation:

  1.            15% + 8% + 9% + 7% = 39%
  2.                      39% - 100% = 61%
  3.                  $490 x 61% = $298.90

             

<h2>                </h2>

<h2>                 <u><em>The answer is 61%.</em></u></h2><h3><u><em>                  The exact cash amount is $298.90                     </em></u></h3>
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Answer:

k -= 1

Step-by-step explanation:

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