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3 years ago

HELlPpPp BRAINLIEST thank you <3 m – 9 = 11

Mathematics

2 answers:

german3 years ago

5 0

Answer:

m=20

Step-by-step explanation:

m-9=11

m-9+9=11+9

m=20

Art [367]3 years ago

3 0

Answer:

m=20

Step-by-step explanation:

brainliest plz

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Three more than twice a number x is seven,

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Answer:

2(x-7) + 3 = 9

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x = 10

Step-by-step explanation:

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3 years ago

Find the equation of the line.

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Answer:

y = 0,5 x + (-3)

Step-by-step explanation:

We can see from the graph that when y = -3, the line crosses y axis, therefore

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2 years ago

Gravel is being dumped from a conveyor belt at a rate of 20 ft3/min, and its coarseness is such that it forms a pile in the shap

11Alexandr11 [23.1K]

Answer:

0.25 feet per minute

Step-by-step explanation:

Gravel is being dumped from a conveyor belt at a rate of 20 ft3/min. Since we are told that the shape formed is a cone, the rate of change of the volume of the cone.

$\dfrac{dV}{dt}=20$ ft^3/min$

$\text{Volume of a cone}=\dfrac{1}{3}\pi r^2 h$

Since base diameter = Height of the Cone

Radius of the Cone = h/2

Therefore,

$\text{Volume of the cone}=\dfrac{\pi h}{3} (\dfrac{h}{2}) ^2 \\V=\dfrac{\pi h^3}{12}$

$\text{Rate of Change of the Volume}, \dfrac{dV}{dt}=\dfrac{3\pi h^2}{12}\dfrac{dh}{dt}$

Therefore: $\dfrac{3\pi h^2}{12}\dfrac{dh}{dt}=20$

We want to determine how fast is the height of the pile is increasing when the pile is 10 feet high.

$h=10$ feet$\\\\\dfrac{3\pi *10^2}{12}\dfrac{dh}{dt}=20\\25\pi \dfrac{dh}{dt}=20\\ \dfrac{dh}{dt}= \dfrac{20}{25\pi}\\ \dfrac{dh}{dt}=0.25$ feet per minute (to two decimal places.)$

When the pile is 10 feet high, the height of the pile is increasing at a rate of 0.25 feet per minute

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3 years ago

What is the solution to the equation 2(3)x = 3x + 1?

boyakko [2]

The answer to the question is X=1/3

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3 years ago

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