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3 years ago

Can someone help me with my work please

Mathematics

1 answer:

Alja [10]3 years ago

6 0

You'd place inches on the numerator and yards in the denominator place.

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Please help for 10 points.

Gemiola [76]

Answer:

w/9 > 23

Step-by-step explanation:

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3 years ago

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Quiz: Angle Measures and Segment Lengths scores

Olegator [25]

Answer:

What is the value of x + z? ... length of line segment IK? a. 4 units b. 42 units c. 82 units d.

Step-by-step explanation:

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3 years ago

A chemical company makes two brands of antifreeze the first brand contains 65% pure antifreeze and the second brand contains 80%

liq [111]

Answer:

30 gallons of each brand

Step-by-step explanation:

1 gallon of 60% + 1 gallon of 80% = 2 gallons 70% (60/2 = 30)

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3 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

5 0

3 years ago

How do you write 9/100 as a decimal?<br> 0.09<br> 9.0<br> 0.9

ANTONII [103]

The first one is correct

6 0

3 years ago

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