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Vadim26 [7]
3 years ago
6

The sum of three times a number and six is twelve.

Mathematics
1 answer:
Kaylis [27]3 years ago
8 0

For this case we must raise the equation according to the given statement.

Let the variable "x" be the unknown number.

So, three times the number is: 3x

If to that term is added "6" we have:

3x+6

The sum of both terms is "12", then:

3x+6 = 12

Thus, the equation is: 3x+6 = 12

Answer:

3x+6 = 12

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4 0
3 years ago
A school has 300 students.If the ratio of boys to girls is 31 to 44, how many more girls are there in the school?
garri49 [273]

Answer:

there would be 52 more girls I think

Step-by-step explanation:

let x = multiplier then

31x =number of boys

44x = number of girls

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75x = 300

x = 300/75

x = 4 is the multiplier

therefore:

44*4 = 176 girls

31*4 = 124 boys

dif = 52 more girls than boys

hope this helped :)

5 0
2 years ago
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yarga [219]

Answer:

Step-by-step explanation:

(7x-3)(12x-7)

we are solving for x and we are multiplying.

we start with the x's 7x*12x=  84x

-3*-7=21

so now we have

84x+21=0

the 0 is a placer for answering the question

we minus 21 to both sides

84x=-21

now we divide

84/-21= -4

x=-4

6 0
2 years ago
-11-(-13) hellpppppooppppop
laiz [17]

Answer:

2

Step-by-step explanation:

we have:

-11-(-13)

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2

6 0
3 years ago
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Brut [27]

Answer:

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Step-by-step explanation:

Simple, if he sold 16 pretzels, and each one costs $1.25, then multiply the cost by how many:

16X1.25=20

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I hope this helps!

5 0
3 years ago
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