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Tanzania [10]
3 years ago
15

35 girls and boys have planned for a walk. There is a ratio of 5 girls to 2 boys. How many boys are there

Mathematics
2 answers:
Nesterboy [21]3 years ago
7 0
5x=2x=35
7x=35
x=35/7
x=5
5x=25 girls
2x=10 boys
 
 hope i helped you

denis23 [38]3 years ago
5 0
14 boys cause 35 dived by 5 = 7 *2 =14
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$40

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If it was 20% off, you are paying 80% of the original price.

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32/.8 = 40

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What is the area of a circle with diameter 8cm? Round your answer to the nearest tenth. use pi= 3.14
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50.2 square cm

Step-by-step explanation:

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The initial price for wingstop is $40. After using a 30% discount, what is the<br> new cost?
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6 0
3 years ago
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kolbaska11 [484]
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2 years ago
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What’s the element?
FromTheMoon [43]

Explanations and Steps:

How to find the elements:

*Take every element (either one capital letter OR two letters with the first capital and second lowercase)

*Reference the periodic table to find the element name

The number of reactants:

*Reactants are on the left side, what there is before the reaction

*Each reactant is separated by the + sign

*They may be more than one element

The number of products:

*Products are on the right side, what there is after the reaction

*Each product is separated with the + sign

*They may be more than one element

Is it balanced:

Count the number of each element on both sides. It is balanced if both sides have the same number of every element.

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Answers:

<u>6.</u>

The elements are:

H - hydrogen

Cl - chlorine

Ca - calcium

O - oxygen

# of reactants: 2

# of products: 2

Is it balanced?

Reactants:

H 4

Cl 2

Ca 1

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Products:

H 2

Cl 2

Ca 1

O 1

It's not balanced because H and O have different numbers of atoms in the reactants and products.

<u>7.</u>

The elements are:

K - potassium

Cl - chlorine

O - oxygen

# of reactants: 1

# of products: 2

Is it balanced?

Reactants:

K 1

Cl 1

O 3

Products:

K 1

Cl 1

O 2

It's not balanced because there are three oxygen atoms for reactants but only two oxygen atoms in the product.

<u>8.</u>

The elements are:

K - potassium

P - phosphorus

O - oxygen

H - hydrogen

Cl - chlorine

# of reactants: 2

# of products: 2

Is it balanced?

Reactants:

K 3

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H 1

Cl 1

Products:

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It's not balanced because H and Cl have different numbers of atoms.

<u>9.</u>

The elements are:

S - sulphur

O - oxygen

# of reactants: 2

# of products: 1

Is it balanced?

Reactants:

S 2

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Products:

S 2

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It's balanced because both sides have 2 sulphur atoms and six oxygen atoms.

<u>10.</u>

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K - potassium

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N - nitrogen

O - oxygen

# of reactants: 2

# of products: 2

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Reactants:

K 2

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Pb 1

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Pb 1

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It's not balanced because K, N and O have different numbers of atoms.

4 0
3 years ago
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