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4 years ago

What are the domain and range of the function R(x) = 2x+1?

Mathematics

1 answer:

disa [49]4 years ago

4 0

Answer:

Domain: (-∞,∞)

Range: (-∞,∞)

Step-by-step explanation:

When you graph this slope-intercept form equation (y=mx+b), you can see that the line continuously goes up, down, left, and right forever.

<em>Hope this helped! Brainliest is always appreciated :)</em>

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A hotel manager is adding a tile border around the hotel's rectangular pool. Let p represent the width of the pool, in feet. T

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Answer:

A and F

Step-by-step explanation:

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3 years ago

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Select all of the products of 2.74 • 7.5

Nana76 [90]

2.74x7.5=20.55=20.550
That's all of your answers.

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3 years ago

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A rectangular prism with length width and height has a volume of l w h what is the volume of a prism which has a base of 5 m by

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$v = l \: w \: h$
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3 years ago

Sodium is a reactive metal. chlorine is a reactive gas. these two elements combine to form a

11Alexandr11 [23.1K]

A and d seem correct to me.

b and c are definitely wrong.

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3 years ago

Use a matrix to solve the system:

Romashka-Z-Leto [24]

Answer:

(2.83 , 1 , 4)

Step-by-step explanation:

$2x+2y-z=4\\4x-2y-2z=2\\3x+3y-4z=-4\\$

Rewrite these equations in matrix form

$\left[\begin{array}{ccc}2&2&-1\\4&-2&-2\\3&3&-4\end{array}\right] \left[\begin{array}{ccc}x\\y\\z\end{array}\right]=\left[\begin{array}{ccc}4\\2\\-4\end{array}\right] \\$

we can write it like this,

$AX=B\\X=A^{-1}B$

so to solve it we need to take the inverse of the 3 x 3 matrix A then multiply it by B.

We get the inverse of matrix A,

$A^{-1}=\left[\begin{array}{ccc}7/15&1/6&-1/5\\1/3&-1/6&0\\3/5&0&-2/5\end{array}\right] \\$

now multiply the matrix with B

$X=A^{-1}B\\\\\left[\begin{array}{ccc}x\\y\\z\end{array}\right] =\left[\begin{array}{ccc}7/15&1/6&-1/5\\1/3&-1/6&0\\3/5&0&-2/5\end{array}\right]\left[\begin{array}{ccc}4\\2\\-4\end{array}\right] \\\\\\\left[\begin{array}{ccc}x\\y\\z\end{array}\right] =\left[\begin{array}{ccc}2.83\\1\\4\end{array}\right] \\$

4 0

3 years ago