4 glue sticks cost $7.76. Write a proportion

Mathematics

1 answer:

damaskus [11]2 years ago

3 0

1.94

Divide 7.76 by 4 to get the cost of each glue stick

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Suppose that a cyclist began a 476

mojhsa [17]

Well, we know the cyclist left the western part going eastwards, at the same time the car left the eastern part going westwards

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let's say after 8.5hrs, the cyclist has travelled "d" miles, whilst the car has travelled the slack, or 476-d, in the same 8.5hrs

we know the rate of the car is faster... so if the cyclist rate is say "r", then the car's rate is r+33.2

thus $\bf \begin{array}{lccclll}
&distance&rate&time\\
&-----&-----&-----\\
\textit{eastbound cyclist}&d&r&8.5\\
\textit{westbound car}&476-d&r+33.2&8.5
\end{array}\\\\
-----------------------------\\\\
\begin{cases}
\boxed{d}=8.5r\\\\
476-d=(r+33.2)8.5\\
----------\\
476-\boxed{8.5r}=(r+33.2)8.5
\end{cases}$

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3 years ago

How can you tell if a function is quadratic?

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Instructor Vallejo is trying to figure out the percentage of students that still listen to The Doors. Instructor Vallejo

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Answer:

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3 years ago

Write -3r+3u in polar form PLEASE HELP

tamaranim1 [39]

We have that
 -3r+3u

Step 1
Use the distance formula to find the radius
r = √(x^2 + y^2)
(x,y)----------> (-3,3)
r= √(-3^2 + 3^2)=√18=3√2

Step 2
Use the tangent to find the angle
θ = arctan(y/x)
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then
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Step 3
write in polar form
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