3 years ago

Rewrite the equation below so that it does not have fractions.

Mathematics

1 answer:

sasho [114]3 years ago

8 0

Answer:

8x=21

Step-by-step explanation:

Brainliest pls

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Step-by-step explanation:

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3 years ago

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3 years ago

In A certain chemical, the ratio of zinc to copper is 3 to 19. A jar of the chemical contains 836 grams of copper. How many gram

Elis [28]

Answer:

The jar contains 132 grams of zinc

Step-by-step explanation:

zinc to copper = 3 : 19

New equivalent weights

zinc to copper = x : 836

Now, let us solve for x as follows

$\frac{zinc}{copper} = \frac{3}{19} = \frac{x}{836} \\\\cross-multiplying\\3 \times\ 836 = 19 \times\ x\\2508 = 19x\\x = \frac{2508}{19}\\x = 132$

the jar contains 132 grams of zinc

To check if the answer is accurate, the answer gotten when the weight of zinc is divided by copper will be the same for both the old and new ratios:

old ratio: 3 ÷ 19 = 0.158

new ratio: 132 ÷ 836 = 0.158

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