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3 years ago

Geometry help anyone!!

Mathematics

1 answer:

Monica [59]3 years ago

6 0

Check the picture below.

$\bf \textit{volume of a cylinder}\\\\ V=\pi r^2 h~~ \begin{cases} r=radius\\ h=height\\[-0.5em] \hrulefill\\ h = 6\\ r=3 \end{cases}\implies V=\pi (3)^2(6)\implies \stackrel{in^3}{V=54\pi}$

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If x represents a number, write an expression in terms of x for seven less than three times this number divided

TEA [102]

Step-by-step explanation:

seven less than three times this number = 7 - 3x

7 - 3x divided by 5 times the square of number =

$\frac{7 - 3x}{5 {x}^{2} }$

hope this answer helps you dear...and may u have a great day ahead!

5 0

3 years ago

Chantal bicycles at a speed of 20 miles per hour and has already riden 45 miles when Trisha begins cycling. Trish bicycles at a

melomori [17]

Answer:

Chantal and Trisha will have both traveled 105 miles in 20 minutes.

Step-by-step explanation:

$y$ is distance in miles, $x$ is time in hours.

The two equations are:

$y = \frac{20}{x} + 45$

$y = \frac{35}{x}$

Set them equal to each other and solve for x:

$\frac{35}{x} = \frac{20}{x} + 45$

$\frac{35}{x} - \frac{20}{x} = 45$

$\frac{35-20}{x} = 45$

$\frac{15}{x} = 45$

$x = \frac{15}{45} = \frac{1}{3} hours = 20 minutes$

Plug that back into the equations to confirm this $x$ gives the same $y$ :

$y = \frac{20}{1/3} + 45 = 105 miles$

$y = \frac{35}{1/3} = 105 miles$

4 0

2 years ago

Assume that after t hours on the job, a factory worker can produce 100te^-.5t units per hour. How many units does the worker pro

VMariaS [17]

The number of units produced by the worker during t hours of work can be modelled by the following function:

$N(t)=100t e^{(-0.5t)}$

To find the number of units produced during first 3 hours, we can substitute 3 for t. This will give us the number of units produced by the worker during first 3 hours.

$N(3)=100(3) e^{-0.5(3)} = 67$

Thus the worker will produce 67 units during the first 3 hours of the work.

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3 years ago

A helicopter is flying directly above a submarine at a position of 125 feet above sea level. The submarine is located at -70 fee

Vlad [161]

Answer:

125+70

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

12 inches is a feet :))

wolverine [178]