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3 years ago

For the equation - 3x + 2 = 8 and the inequality

Mathematics

1 answer:

Anarel [89]3 years ago

8 0

Answer:

x= -2; x ≥ 2

Step-by-step explanation:

1. -3x+2=8

Subtract +2 on both sides

-3x+2-2=8-2

-3x=6 Divide by -3 on both sides

-3x/-3=6/-3

x= -2

-2 is the answer for both the equation and inequality.

sorry i was lazy to do the inequality one, but it should be the same answer.

also ignore the fact that theres a line, i could not find the sign without one, o im sorry.

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Answer:

<h2>36.14 pounds of 34% copper alloy and 9.86 pounds of 48% copper alloy</h2>

Step-by-step explanation:

First alloy contains 34% copper and the second alloy contains 48% alloy.

We wish to make 46 pounds of a third alloy containing 37% copper.

Let the weight of first alloy used be $x$ in pounds and the weight of second alloy used be $y$ in pounds.

Total weight = $46\text{ }pounds=x+y$ $-(i)$

Total weight of copper = $37\%\text{ of 46 pounds = }34\%\text{ of }x\text{ pounds + }48\%\text{ of }y\text{ pounds }$

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Subtracting 34 times first equation from second equation,

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3 years ago

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Answer:

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