2 years ago

Please help me on this I'am still stuck on it thank you all

Mathematics

2 answers:

brilliants [131]2 years ago

7 0

77 is the median score for rhis propblem

Delvig [45]2 years ago

4 0

Im pretty sure the answer is going to be the letter C

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8 8/9 - 5 1/11???????????????????????

saw5 [17]

Hiiii

Answer:

The answer is 4 25/99

$4 \frac{25}{99}$

5 0

2 years ago

Read 2 more answers

At noon, ship A is 50 km west of ship B. Ship A is sailing south at 10 km/h and ship B is sailing north at 20 km/h. How fast is

Lena [83]

So hmmm check the picture below

so, we're looking for dr/dt then at 4:00pm or 4 hours later

now, keep in mind that, the distance "x", is not changing, is constant whilst "y" and "r" are moving, that simply means when taking the derivative, that goes to 0

$\bf r^2=x^2+y^2\implies 2r\cfrac{dr}{dt}=0+2y\cfrac{dy}{dt}\implies \cfrac{dr}{dt}=\cfrac{y\frac{dy}{dt}}{r}\quad 
\begin{cases}
\cfrac{dy}{dt}=30\\
r=130\\
y=120
\end{cases}
\\\\\\
\cfrac{dr}{dt}=\cfrac{120\cdot 30}{130}$