2 years ago

HURRYY

Mathematics

1 answer:

erastovalidia [21]2 years ago

4 0

Answer:

4.9 estimated but 4.8 non estimated

Step-by-step explanation:

You might be interested in

What is the volume of a cylinder with a base radius of 2 and height <br> 6

Alik [6]

Answer:

your answer is 75.4

4 0

2 years ago

NEED HELP AGAIN

Viefleur [7K]

2238 - 300 = 1938 ft is your answer

6 0

2 years ago

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

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