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3 years ago

Find the values of x and y that satisfy both the equations 12x + 3y = 15 and 2x – 3y = 13.

Mathematics

1 answer:

Olin [163]3 years ago

6 0

Answer:

X=1 and Y=1 in the first question

Step-by-step explanation:

simply 12X means 12*x, so x=1 and 12*1+3*1=15 question 1

and question 2

2X means 2*X x=8 so 2*8=16 so 16-3 because Y=1 and

16-3=13

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Keith_Richards [23]

Given:

The data point is (3,10.5).

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To find:

The value of the residual for this data point.

Step-by-step explanation:

The data point is (3,10.5). So, the actual value is 10.5 at $x=3$ .

Prediction equation is

$y=-6.1x+12.5$

Putting $x=3$ , we get

$y=-6.1(3)+12.5$

$y=-18.3+12.5$

$y=-5.8$

The formula for residual is:

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$Residual=10.5+5.8$

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Therefore, the residual for the given data point is 16.3.

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3 years ago

Cody was 165\,\text{cm}165cm tall on the first day of school this year, which was 10\%10% taller than he was on the first day of

Doss [256]

Answer:

165 cm.

Step-by-step explanation:

Let h be the height of Cody on the first day of school last year.

We have been given that Cody was 165 cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.

To find the height of Cody on the first day of school last year, we need to find h such that h plus 10% of h equals 165. We can represent this information in an equation as:

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Let us divide both sides of our equation by 1.10.

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4 years ago

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Helga [31]

Answer:

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3 years ago

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Semenov [28]

Answer:

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Step-by-step explanation:

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3 years ago

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oksano4ka [1.4K]

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3 years ago

Find the values of x and y that satisfy both the equations 12x + 3y = 15 and 2x – 3y = 13.​

Find the values of x and y that satisfy both the equations 12x + 3y = 15 and 2x – 3y = 13.