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2 years ago

A massage costs $81.50 per hour. How much will a massage for 2.5 hours cost? $

1 answer:

6 0

$\bf \begin{array}{ccll}
\$&hours\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
81.50&1\\
x&2.5
\end{array}\implies \cfrac{81.50}{x}=\cfrac{1}{2.5}\implies \cfrac{81.50\cdot 2.5}{1}=x$

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Equation of the parabola in vertex form that passes through (4,-7) and has a vertex of (1,-6)

Alina [70]

$y = -\frac{1}{9}(x - 1)^2 - 6$

Step-by-step explanation:

The vertex form of the equation for a parabola is given by

$y = a(x - h)^2 + k$

where (h, k) are the coordinates of the parabola's vertex. Since the vertex is at (1, -6), we can write the equation as

$y = a(x - 1)^2 - 6$

Also, since the parabola passes through (4, -7), we can use this to find the value for a:

$-7 = a(4 - 1)^2 - 6 \Rightarrow -7 = 9a - 6$

$a = -\frac{1}{9}$

Therefore, the equation of the parabola is

$y = -\frac{1}{9}(x - 1)^2 - 6$

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1 year ago

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2 years ago

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using trigonometry:-

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Step-by-step explanation:

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