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xz_007 [3.2K]
3 years ago
12

Solve the system of equations by substitution

Mathematics
1 answer:
r-ruslan [8.4K]3 years ago
6 0
We have y=2x and y=x+2
They both equal y, so substitute the first equation for y in the second equation.
2x=x+2
Let’s get x to one side. Let’s subtract x from both sides.
X=2
Since x=2, just plug in 2 for x.
2+2=4
So,
X=2
Y=4















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Step-by-step explanation:

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2 years ago
Find the domain of the following piecewise function
r-ruslan [8.4K]

The domain of the function will be [-4, 6). Then the correct option is B.

The complete question is attached below.

<h3>What are domain and range?</h3>

The domain means all the possible values of x and the range means all the possible values of y.

The function is given below.

f(x) = \left\{\begin{matrix}x+4, & if & -4\leq x < 3 \\\\2x-1, & if & 3 \leq x < 6 \\\end{matrix}\right.

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More about the domain and range link is given below.

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3 years ago
Marks own a carpet store and sells hallway runners for k9.52/linear foot. a) How much is this per linear yard? b) How much is th
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Answer:

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6 0
2 years ago
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Ksivusya [100]

Distances in 2- and 3-dimensions (and even higher dimensions) can be found using the Pythagorean theorem. The straight-line distance can be considered to be the hypotenuse of a right triangle whose sides are the horizontal and vertical differences between the coordinates.

Here, you have A = (0, 0) and B = (3, 6). The horizontal distance between the points is ...

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The vertical distance between the points is ...

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Then the straight-line distance (d) between the points is found from the Pythagorean theorem, which tells you ...

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... d = √(9 + 36) = √45 ≈ 6.7 . . . units

8 0
3 years ago
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