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2 years ago

Can someone solve this?

Mathematics

1 answer:

insens350 [35]2 years ago

7 0

Answer:

<h3> Jake is 13 years old</h3>

Step-by-step explanation:

D - age of Dani

J = D+2 - age of Jake

E = 2J = 2(D+2) = 2D+4 - age od Ethan

Z = 2E = 2(2D+4) = 4D+8 - age of Zoe

The sum of their ages is 102:

D + J + E + Z = 102

D + D+2 + 2D+4 + 4D+8 = 102

8D + 14 = 102

-14 -14

8D = 88

÷8 ÷8

D = 11

J = 11+2 = 13

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Answer:

$\large\boxed{y=-\dfrac{1}{3}x-\dfrac{10}{3}\to x+3y=-10}$

Step-by-step explanation:

The slope-intercept form of an equation of a line:

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m - slope

b - y-intercept

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$m=\dfrac{y_2-y_1}{x_2-x_1}$

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2 years ago

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