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3 years ago

2x+2y=16 , 6x+4y=38 what is the value of x

1 answer:

5 0

1st equation—x, substitute y:
3x + 2(x + 3) = 16 
3x + 2x + 6 = 16 
5x = 10 
x = 2 

y in the above equation: 
= 2 + 3 
= 5 

Answer: x = 2, y = 5

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Mademuasel [1]

Answer:

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Step-by-step explanation:

• The slope-intercept form of an equation takes the general form:

$\boxed{y = mx + c}$ ,

where:

m = slope,

c = y-intercept.

• We are given the equation:

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To change this into the slope-intercept form, we must make y the subject:

$3y = -2x + 1470$ [subtract $2x$ from both sides]

⇒ $y = -\frac{2}{3}x + \frac{1479}{3}$ [divide both sides by 3]

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m = $-\frac{2}{3}$

c = $490$ .

This means that the gradient is $\bf -\frac{2}{3}$ , and the y-intercept is $\bf 490$ .

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2 years ago

In Ms. Henrick's class, there are 10 boys and 12 girls. What is the ratio of boys to girls? Express your answer as a fraction in

OleMash [197]

Answer:

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Step-by-step explanation:

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3 years ago

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kakasveta [241]

15 is the answer because 8-5 is 3 and 3 and 4 is 12 so 12 plus 3 is 15

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3 years ago

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