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3 years ago

Rachel started with 7 candies in her bag and collected 60 candies in 3 hours. Turn it into y=mx+b

Mathematics

1 answer:

PSYCHO15rus [73]3 years ago

4 0

y=20x+7 is the final equation

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Jeremy, Beto, and Trisha went out to Angry Chickz for

Verdich [7]

Trisha = $5
beto and jeremy = $60
jeremy = ½ beto
beto = $ 40
jeremy = $20

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3 years ago

A filter filled with liquid is in the shape of a vertex-down cone with a height of 9 inches and a diameter of 6 inches at its op

Alina [70]

Answer: Level of the liquid dropping at 28.28 inch/second when the liquid is 2 inches deep.

Step-by-step explanation:

Since we have given that

Height = 9 inches

Diameter = 6 inches

Radius = 3 inches

So, $\dfrac{r}{h}=\dfrac{3}{9}=\dfrac{1}{3}\\\\r=\dfrac{1}{3}h$

Volume of cone is given by

$V=\dfrac{1}{3}\pi r^2h\\\\V=\dfrac{1}{3}\pi \dfrac{1}{9}h^2\times h\\\\V=\dfrac{1}{27}\pi h^3$

By differentiating with respect to time t, we get that

$\dfrac{dv}{dt}=\dfrac{1}{27}\pi \times 3\times h^2\dfrac{dh}{dt}=\dfrac{1}{9}\pi h^2\dfrac{dh}{dt}$

Now, the liquid drips out the bottom of the filter at the constant rate of 4 cubic inches per second, ie $\dfrac{dv}{dt}=-4\ in^3$

and h = 2 inches deep.

$-4=\dfrac{1}{9}\times \pi\times (2)^2\dfrac{dh}{dt}\\\\-9\pi =\dfrac{dh}{dt}\\\\-28.28=\dfrac{dh}{dt}$

Hence, level of the liquid dropping at 28.28 inch/second when the liquid is 2 inches deep.

7 0

3 years ago

I need help fast!! ASAP I need help with this and that’s it!

aleksandr82 [10.1K]

Cut it in half (the top into a trapezoid and the bottom into another trapdoors then solve both and add them

6 0

3 years ago

Find the inequalities for every word problems and after match

vichka [17]

1b ONLY LESS THAN
2c ONLY MORE THAN
3a HIGHEST means less than OR equal to
4d 7.54 miles OR MORE means greater than or equal to

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3 years ago

For the function f(x)=x2-4, fins the value of f(x) when x=6

garri49 [273]

$f(x)=x^2-4\\f(6)=6^2-4\\f(6)=32$

$f(x)=x*2-4\\f(6)=6*2-4\\f(6)=8$

P.S. Hello from Russia

7 0

3 years ago

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