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Doss [256]
3 years ago
7

i need help finding the height of a cone and i do not know where to start. any help will be greatly appreciated:))

Mathematics
1 answer:
Aliun [14]3 years ago
3 0

Answer:

h=12

Step-by-step explanation:

First look at the formula for finding the volume of a cone- V=\pi r^{2} \frac{h}{3}

Next substitute any variables for values you already know- 144\pi =\pi (6)^{2} \frac{h}{3}

Then solve the equation.

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Simplify.<br> 2u? - 20u +42<br> u² – 5u+6
chubhunter [2.5K]

Answer:

The simplified expression is:

\frac{2(u + 7)}{(u- 2)}

Step-by-step explanation:

We want to simplify:

\frac{2 {u}^{2}  - 20u + 42}{ {u}^{2}  - 5u + 6}

We factor the numerator and the denominator to get:

\frac{2(u - 3)(u + 7)}{(u- 2)(u- 3)}

Cancel out u-2 which is common to the numerator and the denominator yo get:

\frac{2(u + 7)}{(u- 2)}

5 0
3 years ago
34. What is the side length of a cube with a<br> volume of 3,520 cubic feet?
insens350 [35]

11.5 because the formula is V=a³

5 0
2 years ago
The mean of four positive integers is 5.
a_sh-v [17]

Answer:

(x1 + x4)/2 = 4

Step-by-step explanation:

(x1 + x2+ x3 + x4)/4 = 5         mean

x1 , x2 , x3 , x4

median (x2+x3)/2 = 6

(x2+x3) = 12

The smallest integer is x1, the largest integer x2.

The mean of the largest and smallest of the integers is (x1 + x2)/2.

(x1 + x2+ x3 + x4)/4 = 5  

x1 + x2+ x3 + x4 = 20

x1 + 12 + x4 = 20

x1 + x4 = 20 - 12

x1 + x4 = 8

(x1 + x4)/2 = 8/2

(x1 + x4)/2 = 4

8 0
3 years ago
I need help with this how do I do it
Anna35 [415]
Triangle angles add to 180 degrees. Thus, x - 17, x - 22, and 3x + 19 add to 180.

Add like terms to get 5x - 20 = 180
5x = 200
x = 40
5 0
3 years ago
The equation of line j is y= negative x + 3/8 line k which is perpendicular to line j, includes the point (negative 2, 7) what i
photoshop1234 [79]
Line j is negative and line k is postive so you combine hem in like terms to solve them

4 0
3 years ago
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