Answer:12
Step-by-step explanation:
Find the picture I attached to this answer. I solved it clearly.
We need 56 pints of the 55 % <em>pure fruit</em> juice and 84 pints of the 80 % <em>pure fruit</em> juice to prepare 140 pints of 70 % <em>pure fruit</em> juice.
<h3>How to use weighted averages to find the correct juice concentration</h3>
In this problem we have to use two kinds of juice with different concentrations. To get a certain concentration, we must adjust quantities of each kind and <em>weighted</em> averages offers a method that is easy to apply:
70 · 140 = 55 · x + 80 · (140 - x)
70 · 140 = 80 · 140 - 25 · x
25 · x = 10 · 140
x = 56
We need 56 pints of the 55 % <em>pure fruit</em> juice and 84 pints of the 80 % <em>pure fruit</em> juice to prepare 140 pints of 70 % <em>pure fruit</em> juice.
To learn more on weighted averages: brainly.com/question/28042295
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Multiply both sides by 4 to isolate the x term.
x = 5 × 4
x = 20
15m because if we add all of the you will get 12 but atleast you need some for backyard
<span>Expand 3x (2x-1)
3x outside must </span>multiply both terms inside
the brackets:
= 6x^2 - 3x
Hope it helps
