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3 years ago

Answer please show steps please

Mathematics

1 answer:

erik [133]3 years ago

6 0

Answer:

25 girls

Step-by-step explanation:

Let

x denote number of boys

and

y denote number of girls

According to the statement that total 45 people came,

x+y = 45 => Eqn 1

And total paid amount was 175

So,

5x + 3y = 175 => Eqn 2

For solving, We will use the substitution method

So, from eqn 1

x = 45-y

Putting value of x in eqn 2

5(45-y) +3y = 175

225 - 5y + 3y = 175

-2y+225 = 175

-2y = 175-225

-2y = -50

2y = 50

y = 25

Putting y =25 in eqn 1

x+25 = 45

x = 45 - 25

x = 20

As y= 25

So, 25 girls came to the dance ..

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3 years ago

Students are measuring the mass of an object in Science class. The mass is 38 grams. Danielle measured the mass at 40 grams. Wha

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Answer:

5.26%

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3 years ago

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yKpoI14uk [10]

Answer:

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Explanation:

7(2x−3)=1

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7 0

3 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

L= a+(n-1)d <br><br>SOLVE FOR N

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Answer:

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Step-by-step explanation:

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$l -a =(n+1)d$

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4 years ago