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Mrrafil [7]
2 years ago
14

Please help 28 POINTS

Mathematics
2 answers:
AURORKA [14]2 years ago
6 0

Step-by-step explanation:

5 \frac{7}{10}  + 6 \frac{7}{10}

= 5 +  \frac{7}{10}  + 6 +  \frac{7}{10}

= 11 +  \frac{14}{10}

= 11 + 1 \frac{4}{10}

= 12 \frac{4}{10}

Y_Kistochka [10]2 years ago
4 0

Hello there!

5\frac{7}{10} +6\frac{7}{10}

First, we must add 5+6:

Now, we add the numerators:

11\frac{14}{10}

Hey! Look at this mixed number! A whole number and an improper fraction!

We must have a whole number and a proper fraction.

So the Answer is:

12\frac{4}{10} \\Reduce:\\12\frac{2}{5}

Hope it helps!

GraceRosalia

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The percent yield of zinc carbonate is 5.91%.

<h3>What is chemical reaction?</h3>

The chemical reaction is the reaction between two reactants which led to the formation of products.

The products are substances which forms after reaction. The reactants are the substances which are original materials.

Given is a reaction between 1.7 moles of zinc iodide and excess sodium carbonate yields 12.6 grams of zinc carbonate.

The given balanced equation is:  Na₂CO₃ + ZnI₂ → 2NaI + ZnCO₃

From given moles of zinc iodide, the moles of zinc carbonate

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brainly.com/question/22817140

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7 0
2 years ago
Choose 2 hellllpppppp plzzzxxxxzz
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Choices C and D

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The most simplest way is just to solve each one and see which two have the same answer as the first expression.

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For choice D I distributed the negative one to the insides of the parenthesis that left me with -\frac{4}{7}-\frac{8}{9}+\frac{4}{7} +\frac{9}{8}  which is the same expression as the first one.

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