3 years ago

Which of the following functions is represented by the graph below?

Mathematics

1 answer:

Ann [662]3 years ago

6 0

Answer:

A. y = 3 cos (1/2) x.

Step-by-step explanation:

The y-intercept is 3 so it will contain 3 cos x (because y = cos x passes through (0, 1).

The graph of 3 cos x has been stretched horizontally by a factor 2 ( 3 cos x would pass through (π/2, 0) whereas the given graph passes through (π, 0).

So the equation is 3 cos(1/2) x

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If a bill cost $125. And they leave a $21.25 for a tip what percentage did they tip

yanalaym [24]

Answer:

17%

Step-by-step explanation:

Divide $21.25 by $125

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3 years ago

What are the vertex, axis of symmetry, domain and range of the function:

DiKsa [7]

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y=-(x^2+4x-3)
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Answers:
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2 years ago

Find the equation of a line containing the given point and slope (10,5); m=9/20

ohaa [14]

$\bf \begin{array}{lllll}
&x_1&y_1\\
% (a,b)
&({{ 10}}\quad ,&{{ 5}})
\end{array}
\\\\\\
% slope = m
slope = {{ m}}= \cfrac{rise}{run} \implies \cfrac{9}{20}
\\\\\\
% point-slope intercept
y-{{ y_1}}={{ m}}(x-{{ x_1}})\implies y-5=\cfrac{9}{20}(x-10)\\
\left. \qquad \right. \uparrow\\
\textit{point-slope form}
\\\\\\
y-5=\cfrac{9}{20}x-\cfrac{9}{2}\implies y=\cfrac{9}{20}x-\cfrac{9}{2}+5\implies y=\cfrac{9}{2}x+\cfrac{1}{2}$