13 erasers in your backpack is considered a what?

Mathematics

1 answer:

bogdanovich [222]3 years ago

4 0

Hoarder of erasers :o

Is this suppose to be a riddle or sum

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Anyone know the answer

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Step-by-step explanation:

the measure of arc RPQ is

360°-42° = 318°

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Between which two numbers will you find -3.25?

Vinil7 [7]

Answer:

Step-by-step explanation:

hope it helps

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A line with slope of 9 passes through the point (1, 5.) what is its equation in slope-intercept

nasty-shy [4]

Y-5=9(x-1)
y-5=9x-9

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How do I find the Velocity and How long will it take for the ball to reach it's maximum height?

Colt1911 [192]

So hmm check the picture below

$\bf \qquad \textit{initial velocity}\\\\
h = -16t^2+v_ot+h_o \qquad \text{in feet}\\
\\ 
\begin{cases}
v_o=\textit{initial velocity of the object}\to &64\\
h_o=\textit{initial height of the object}\to &12\\
h=\textit{height of the object at "t" seconds} \end{cases}\\\\
-----------------------------\\\\$

$\bf \textit{vertex of a parabola}\\ \quad \\

\begin{array}{lccclll}
h(t)=&-16t^2&+64t&+12\\
&\uparrow &\uparrow &\uparrow \\
&a&b&c
\end{array}\qquad 
\left(-\cfrac{{{ b}}}{2{{ a}}}\quad ,\quad {{ c}}-\cfrac{{{ b}}^2}{4{{ a}}}\right)$

part 1)

it takes $\bf -\cfrac{{{ b}}}{2{{ a}}}\quad seconds$

part 2)

$\bf \textit{now, doubling }v_o\\\\
\begin{cases}
v_o=\textit{initial velocity of the object}\to &128\\
h_o=\textit{initial height of the object}\to &12\\
h=\textit{height of the object at "t" seconds}\end{cases}\\\\
-----------------------------\\\\
\textit{vertex of a parabola}\\ \quad \\

\begin{array}{lccclll}
h(t)=&-16t^2&+128t&+12\\
&\uparrow &\uparrow &\uparrow \\
&a&b&c
\end{array}\qquad 
\left(-\cfrac{{{ b}}}{2{{ a}}}\quad ,\quad {{ c}}-\cfrac{{{ b}}^2}{4{{ a}}}\right)$

it will reach the maximum height at $\bf {{ c}}-\cfrac{{{ b}}^2}{4{{ a}}}\quad feet$

how much higher than before is that? well, what was the y-coordinate for when the vₒ was 64? what did you get for $\bf {{ c}}-\cfrac{{{ b}}^2}{4{{ a}}}$ ?

subtract that from this height when vₒ is 128 or doubled, to get their difference, that's how much higher it became

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= (8 - 6) / ( 8 - 4)

= 2 /4

= 1/2 answer

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