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jeyben [28]
3 years ago
15

What is the this expression in standard form?: 6(5r-4)-2(r-7s-3)

Mathematics
1 answer:
Thepotemich [5.8K]3 years ago
3 0

Use distrubutive property <em>a(b + c) = ab + ac</em>

6(5r - 4) - 2(r - 7s - 3)

= (6)(5r) + (6)(-4) + (-2)(r) + (-2)(-7s) + (-2)(-3)

= 30r - 24 - 2r + 14s + 6

= (30r - 2r) + 14s + (-24 + 6)

<h3>= 28r + 14s - 18</h3>
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Answer:

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The rates are additive: you can calculate the<em> inlet </em>rate and the <em>outlet</em> rate and add them algebraically, i.e. the inlet rate will be positive and the outlet rate will be negative.

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<u />

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<u>3. Net rate:</u>

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Step-by-step explanation:

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