Write an equation to describe the relationship between x and y.

Mathematics

2 answers:

sesenic [268]3 years ago

5 0

Answer:

y=4.5x

Step-by-step explanation:

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Igoryamba3 years ago

3 0

Answer:

y = 4.5x

Step-by-step explanation:

Given:

x= 2 ⇒ y=9
x=5 ⇒ y=22.5
x=8 ⇒ y=36

We can see that:

9/2 = 22.5/5 = 36/8 = 4.5

Therefore the relationship between x and y is:

y = 4.5x

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Jlenok [28]

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7 0

3 years ago

The matrix C=[1,-2_-3,7] was used to encode a phrase to [7,-28,-25,-35,-2_-21,107,90,123,17]. Find C^-1 and use it to decode the

posledela

$C= \left[\begin{array}{cc}1&-2\\-3&7\end{array}\right] \\ C^{-1}= \left[\begin{array}{cc}7&2\\3&1\end{array}\right] \\ \left[\begin{array}{cc}7&2\\3&1\end{array}\right] \times \left[\begin{array}{ccccc}7&-28&-25&-35&-2\\-21&107&90&123&17\end{array}\right] \\ =\left[\begin{array}{ccccc}49-42&-196+214&-175+180&-245+246&-14+34\\21-21&-84+107&-75+90&-105+123&-6+17\end{array}\right] \\ =\left[\begin{array}{ccccc}7&18&5&1&20\\0&23&15&18&11\end{array}\right]$
is the required matrix.

6 0

3 years ago

What is the value of the expression |-5x+12| when x=5

MissTica

First, plug in 5 for x:

| -5 * 5 + 12 | = |-25 + 12| = |-13|

Those two lines are absolute value, which measures the distance from the number to 0 on a number line. This distance is always positive.

The distance from -13 to 0 on a number line is 13. The answer is 13.

6 0

4 years ago

Read 2 more answers

-k+3k combined like terms to create an equivalent expression