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3 years ago

8

Chris is twice as old as Don, and next year the sum of their ages will be four times as much as Don’s age last year. Find their

present ages.

1 answer:

RUDIKE [14]3 years ago

5 0

Don's present age: 6
Chris's present age: 12

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Use substitution to solve the linear system of equations.

Ne4ueva [31]

Answer:

Step-by-step explanation: infinitely many solutions (please give brainliest)

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One leg of a right triangle has a length of 7 m. The other side have lengths that are consecutive integers. Find these lengths

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6 and 5

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3 years ago

You accept a new job with a starting salary of $47,000. You receive a 4% raise at the start of your second year, a 5.6% raise at

Sunny_sXe [5.5K]

Answer:

1yr 47,000, 2nd yr 48,880, 3rd yr 51,617.28, 4th yr 57,346.7981 or 57,346.80

Step-by-step explanation:

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3 years ago

Find x so that (x,-14) is a solution to 2x+3y=12

Monica [59]

Answer:

27

Question:

Find $x$ so that $(x,-14)$ is a solution to $2x+3y=12$ .

Step-by-step explanation:

So we are asked to replace $y$ with -14 and solve for $x$ in the equation:

$2x+3y=12$ .

$2x+3y=12$ with $y=-14$ :

$2x+3(-14)=12$

$2x-42=12$

Add 42 on both sides:

$2x=54$

Divide both sides by 2:

$x=27$ .

So the $x$ -coordinate that corresponding to $y=-14$ is $27$ .

Verify that:

$(27,-14)$ is a point satisfying $2x+3y=12$ .

Replace $x$ with 27 and $y$ with -14:

$2(27)+3(-14)=12$

$54+-42=12$

$12=12$ is true so our work must be right.

3 0

3 years ago