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AVprozaik [17]
3 years ago
11

Can someone explain to me how to find if an Algebra Expression is Equivalent to another

Mathematics
2 answers:
Anna [14]3 years ago
6 0
<span>You simply set them to equal each other and solve!
y=2x+5
y=4x-2
Due to logical assumptions, we can say that 2x+5=4x-8
+8
2x+13=4x
-2x 13=2x
 /2 x=13/2,, or 6.5</span>
sashaice [31]3 years ago
4 0
First of all, you need to simplify the expressions in order to know whether they are equal. Then, it all depends on the expression, after you simplify an expression, it will seem much easier to determine that.  <span />
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a chef is going to use a mixture of two brands of Italian dressing. The first brand contains 5% vinegar and the second Brian con
tankabanditka [31]

Answer:

  • 273 mL of 5%
  • 117 mL of 15%

Step-by-step explanation:

Let q represent the quantity of 15% dressing used. Then the amount of 5% dressing is (390 -q). The amount of vinegar in the mix is ...

  0.15q + 0.05(390 -q) = 0.08(390)

  0.10q = 31.2 -19.5 = 11.7 . . . . . . subtract 0.05(390) and simplify

  q = 117 . . . . . . . . . . . . . . . . . . multiply by 10

  390-q = 273

The chef should use 273 mL of the first brand (5% vinegar) and 117 mL of the second brand (15% vinegar).

__

<em>Additional comment</em>

You may have noticed that the value of q is (0.08 -0.05)/(0.10 -0.05)×390. The fraction of the mix that is the highest contributor is the ratio of the difference between the mix value and least contributor, divided by the difference between the contributors: (8-5)/(15-5) = 3/10, the fraction that is 15% vinegar. This is the generic solution to mixture problems.

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Step-by-step explanation:

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We have equation:
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