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3 years ago

The sum of two-sevenths of a number and 3 is 9. Can you please write out into an equation>~

Mathematics

2 answers:

Sonbull [250]3 years ago

7 0

Answer:

The equation is: 2/7x + 3 = 9

The unknown number is: 21

Step-by-step explanation:

Write as an unknown value (using a variable)

2/7ths of a number = 2/7x

Write as an equation

2/7x + 3 = 9

Subtract 3 from both sides of the equation

2/7x = 6

Divide both sides of the equation by 2/7

x = 21

The equation is: 2/7x + 3 = 9

The unknown number is: 21

Hope this helps :)

serg [7]3 years ago

4 0

Answer:

2/7x +3=9

x=21

Step-by-step explanation:

Let the unknown be x.

Take 3 to the other side so: 2/7 multiplied by x= 6

Divide 6 by 2/7 to get the answer;

Therefore x=21

Sub back into equation to check answer.

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Answer:

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Step-by-step explanation:

we know that

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step 1

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substitute the values in the formula

$m=\frac{6-12}{2-5}$

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step 2

Find the initial value

we have

$m=2$

$point\ (2,6)$

substitute in the equation $y=mx+b$

$6=2(2)+b$

solve for b

$6=4+b$

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The linear equation is equal to

$y=2x+2$

The y-intercept or initial value is 2

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3 years ago

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Lerok [7]

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3 years ago

5x+5=1/2x-4 , what is x

melomori [17]

The answer is x = -2. The steps are in the image below.

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8 0

3 years ago

Read 2 more answers

Zanzabum

A pergunta não está bem formatada. No entanto, pelo que parece óbvio

Responda:

3 horas

Explicação passo a passo:

Fração de hora gasta por sessão = 3/4 horas por sessão

Se o exercício for feito apenas aos domingos

Número de domingos por mês = 4

Portanto, número de sessões = 4

Fração de horas por sessão * Número de sessões

3/4 * 4 = 3 horas

Portanto, 3 horas são dedicadas ao exercício por mês

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3 years ago

Determine the price of a $35 basketball that is on sale for 50% off the regular price.

alexira [117]

Answer:

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Step-by-step explanation:

50 is 1/2 of 100, so just divide 35 by 1/2

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3 years ago