Find the GCF for 40 and 48 *

Mathematics

1 answer:

bezimeni [28]3 years ago

5 0

Answer:

Step-by-step explanation:

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Write an equation that represents"Four less than the difference of half a number and 3 is 20 ."Use X for the variable.

Alex73 [517]

Answer:

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3 years ago

What is 6 plus 12 times 8-3

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Answer:

Step-by-step explanation: Use PEMDAS

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3 years ago

How many pounds of a 15% copper alloy must be mixed with 700lb of a 30% copper alloy to maybe a 25.5% copper alloy

lisov135 [29]

Answer:

$300\; \rm lb$ .

Step-by-step explanation:

Let $x$ represent the mass (in pounds) of that $15\%$ copper alloy required, such that the final mixture would contain $25.5\%$ copper by mass.

Consider: if $x$ pounds of that $15\%$ copper alloy is mixed with $700$ pounds that $30\%$ copper alloy, what would be the mass of copper in the mixture?

Mass of copper in $x$ pounds of that $15\%$ copper alloy: $(0.15\, x)\; \rm lb$ .
Mass of copper in $700$ pounds of that $30\%$ copper alloy: $700 \times 0.30 = 210\; \rm lb$ .