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2 years ago

5

A 6 ft. Observer cast a 4 ft. Shadow. At the same time the chimney on the Ohio Power Co. Cast an 804 ft. Shadow. How tall is the

chimney?

1 answer:

skad [1K]2 years ago

6 0

Answer:

1,206 ft

Step-by-step explanation:

6/4 = 1.5 ( proportion 1.5)

804(1.5) = 1,206

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Find the flow rate through a tube of radius 6 cm, assuming that the velocity of fluid particles at a distance r cm from the cent

vaieri [72.5K]

Answer:

791.68 cm/s

Step-by-step explanation:

The volume flow rate can be interpreted as the integral of fluid velocity over area

$\dot{V} = \int\limits^6_0 {v(r) 2\pi r} \, dr\\\dot{V} = 2\pi\int\limits^6_0 {(25-r^2)r} \, dr\\\dot{V} = 2\pi\int\limits^6_0 {25r-r^3} \, dr\\\\\dot{V} = 2\pi[12.5r^2 - r^4/4]_0^6\\\dot{V} = 2\pi(12.5*6^2 - 6^4/4 - 12.5*0 - 0)\\\dot{V} = 2\pi*126 = 791.68 cm/s$

7 0

3 years ago

Which statement is true about the equations -3x + 4y = 12 and 1/4x-1/3y= 1?

Contact [7]

Answer:

the third selection is corret

Step-by-step explanation:

Ax + by + c = 0, k = - a/b.

so The slope of the first line = $\frac{4}{3}$ ,

the slope of the second line = $\frac{4}{3}$ ;

So these two lines are parallel and they don't intersect

4 0

2 years ago

Help with question 24. Please provide explanation! Big points

DerKrebs [107]

Answer:

4/3

Step-by-step explanation:

-3y + 4x = -6

-3y = -6 -4y

slove for Y

y = -6/-3 -4/-3 x

Y = -2 +4/3x

Y = 4/3 x -2

Y = 4/3 x -2

so slope or gradient is coefficient of x

4/3 is gradient.

6 0

3 years ago

Read 2 more answers

An architects blue print for a new house shows the kitchen.being.7 inches wide if the scale used to create the blue print is 0.5

ASHA 777 [7]

7/.5=14
14 feet wide is the kitchen

3 0

3 years ago

Eeeeeeeeeeeeeeeeeeeee

11111nata11111 [884]

Answer:

I think the answer is 42

Step-by-step explanation:

So, with all of that, the equation will now be = 5^2 + (2 * 8) / 2 + (3 * 3)

So next, you can use PEMDAS. After that, u should get ur answer of 42.

Work:

5^2 + (2 * 8) / 2 + (3 * 3)

5^2 + 16 / 2 + 9

25 + 16 / 2 + 9

25 + 8 + 9

25 + 17

= 42

Hope this helps :D!!

3 0

3 years ago

Read 2 more answers