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navik [9.2K]
2 years ago
6

Please help I don't understand!

Mathematics
2 answers:
Gelneren [198K]2 years ago
8 0
The answer is 25 trust me .
Diano4ka-milaya [45]2 years ago
7 0

Answer:

25

Step-by-step explanation:

As the triangles within the bigger triangle are similar, the sides are in proportion.

⇒ \frac{18}{30} = \frac{15}{w}

⇒ \frac{3}{5} = \frac{15}{w}

⇒ 3w = 75

⇒ w = 25

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Answer:

See below

Step-by-step explanation:

The answer is attached

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Anvisha [2.4K]

Answer:

3

Step-by-step explanation:

we can think of the <em>slope</em> of a graph as \frac{rise}{run}

the "rise" is the difference in y-values between two points (the change in y)

the "run" is the difference in x-values between two points (the change in x)

when we divide these (rise/run), we find the slope

you can choose any two well-defined points (with clear x and y values), here are the two we will be using:

(remember, points are written as (x, y)  )  

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for the "rise", we have risen 3 (difference between 2 and -1 = 3 [2- -1 = 3] )

for the "run" we have ran 1 (difference between 0 and -1 = 1) (0 - - 1 = 1)

so, the slope for this graph is: 3/1 ; which simplifies to 3

So, the slope of our graph is 3

<em>--------------------------------------------------------------</em>

<em>technical layout:</em>

<em />

m=\frac{y_{2} -y_{1}}{x_{2}-x_{1}}               (note: slope is called "m" in the format of y=mx + b)

y_{1} means one y-value, y_{2} means other y-value

x_{1} means one y-value, x_{2} means other x-value

{note: it is important to keep the y1 and x1 from the same point, and the y2 and x2 from a shared point}

our equation in this layout:

m=\frac{2 -(-1)}{0-(-1)} = m=\frac{3}{1}

                     m = 3

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