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aev [14]
3 years ago
12

6. What percentage of the children in class 5 is a member of a sports club? 3

Mathematics
1 answer:
Juliette [100K]3 years ago
5 0

Answer:

75%

Step-by-step explanation:

Let x be the percentage for sports club members.

x% of 20 = 15

x/100 x 20 = 15

x/5 = 15

x = 75

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Answer:

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Step-by-step explanation:

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4 0
3 years ago
Mrs. Hwang is taking her vehicle to the shop to have the gas tank expanded by 10 gallons. Now, it costs her $42.56 to fill the t
harina [27]

Answer:

Proportion states that the two fractions or ratios are equal

As per the statement: Mrs. Hwang is taking her vehicle to the shop to have the gas tank expanded by 10 gallons. Now, it costs her $42.56 to fill the tank. Once the new tank is in, it will cost her $72.96

Let the tank size now be x

Since, the gas tank expanded by 10 gallons = x + 10

by definition of proportion ;

\frac{x}{42.56}=\frac{x+10}{72.96}

by cross multiply we get;

72.96x = 42.56(x+10)

using distributive property;a\cdot (b+c) =a\cdot b + a\cdot c

72.96x = 42.56x+425.6

Subtract 42.56x from both sides we get;

30.4x =425.6

Divide both sides by 30.4 we get;

x = 14

Therefore, the tank is her now is, 14 gallons


5 0
3 years ago
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When doctors prescribe medicine, they must consider how the drug’s effectiveness declines as time passes. If each hour a drug is
Pie

Answer:

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Step-by-step explanation:

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What is the slope of the equation y = 3/4x + 8?<br>A. 3/4<br>B. 8<br>C. 3<br>D. 4<br>​
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Answer:

Step-by-step explanation:    

y = m x + b

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Rewrite in slope-intercept form.

y = 3 /4 x − 8

Using the slope-intercept form, the slope is  3 /4 .

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Answer:

d/t

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Step-by-step explanation:

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