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2 years ago

The double number line below shows the approximate number of kilograms in a certain number of pounds

Mathematics

1 answer:

pshichka [43]2 years ago

3 0

3 pounds = 1.5 kilograms
so 9 pounds = 1.5 * 3 = 4.5 kilograms

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\begin{aligned} &y=2x +1 \\\\ &x-y=-3 \end{aligned} y=2x+1 x−y=−3 Is (2,5)(2,5)left parenthesis, 2, comma, 5, right

trapecia [35]

Answer:

Yes

Step-by-step explanation:

Given the system of equations

$\begin{aligned} &y=2x +1 \\\\ &x-y=-3 \end{aligned}$

We want to determine if (2,5) is a solution of the system.

We can do this by substitution of the given point into the equations and see if it holds.

Given (x,y)=(2,5), x=2, y=5

In the first equation

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Therefore, the point (2,5) satisfies the first equation.

In the second equation

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Since our result (-3) is equal to the Right Hand Side, the point also satisfies the second equation.

Therefore, (2,5) is a solution of the system.

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2 years ago

Find the midpoint of the line segment whose endpoints are (2.6, 5.1) and (3, 4.7).

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\\
\\x= \frac{x_1+x_2}{2}= \frac{2.6+3}{2}=2.8
\\
\\y= \frac{y_1+y_2}{2}= \frac{5.1+4.7}{2}=4.9
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Answer:

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Step-by-step explanation:

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