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Svetradugi [14.3K]
4 years ago
7

There are 16 girls in a school club. the number of girls is four more than twice the number of boys. find the number of boys.

Mathematics
1 answer:
Serhud [2]4 years ago
3 0
The number of boys . . . . . B
Twice the number of boys . . . 2B
4 more than twice the number of boys . . . 2B+4

You said that the number of girls is equal to that, so . . .  G = 2B+4

But you also told us what  G  is:  16 = 2B+4

Subtract  4  from each side:  12 = 2B

Divide each side by  2 :  6 = B

There you have it.  There are  6 boys in the club.
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Answer:

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Step-by-step explanation:

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Murljashka [212]

Answer: You bought 7 books and you also bought 4 magazines

Explanation:

x = # of books purchased

y = # of magazines purchased

System of equations:

8x + 5y = 76
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Let’s use elimination in this case, but substitution can also work.

8x + 5y = 76
Multiply the (x + y = 11) by -8

We get:

8x + 5y = 76
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3 years ago
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Which numbers are irrational? Select all that apply.
ziro4ka [17]

Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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We substitute the values under x into the equation

Equation 1: y = 1/4(4) + 1

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Let's solve for equation 1:

Equation 1: y = 1/4(4) + 1

y = 1/4(4) + 1

Multiply number in parenthesis

y = 1/4 * 4/1 + 1

1/4 and 4/1 turn into 1

y = 1 + 1

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Let's solve for equation 2:

y = 1/4(8) + 1

Multiply number in parenthesis

y = 1/4 * 8/1 + 1

1/4 and 8/1 turn into 2

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Add 2 to 1

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y = 1/4 (12) + 1

Multiply number in parenthesis

y = 1/4 * 12/1 + 1

1/4 and 12/1 turn into 3

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Add 3 to 1

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So the table of values would be:

x--------------y

4--------------2

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Answer:

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