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stepan [7]
3 years ago
6

Pls help (50 points)

Mathematics
2 answers:
SIZIF [17.4K]3 years ago
8 0
Answer is 4.5 inches
svetlana [45]3 years ago
6 0

Answer:

4.5 inches

Step-by-step explanation:

We are given the formula:

V = \pi r^{2}h

Plug in the the radius (3) and volume (127.23):

127.23 = 3.14(3)^{2} h

Square the 3 :

127.23 = 3.14(9)h

Multiply the pi & volume:

127.23 = 28.26h

Divide both sides by 28.26:

127.23 ÷ 28.26 = 28.26h ÷ 28.26

h = 4.5021231...

I hope this helps!

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Someone please help me asap!
miskamm [114]

I think the correct answer is C. because each if forming a right triangle when you trace it.

If i'm correct brainliest please

3 0
3 years ago
The rectangular floor of a classroom is 38 feet in length and 20 feet in width. A scale drawing of the floor has a length of 19
gayaneshka [121]

Answer:

58 in

Step-by-step explanation:

38 divided by 19 = 2

20 divided by 2 = 10

19 x 2 = 38

10 x 2 =20

38 + 20 = 58

4 0
3 years ago
I don't know help me
Nataliya [291]
Ok so the first step would be to distribute 3 into 3x and -6. So 3 times 3x would be 9x. 3 times -6 is -18. 

the equation now is 
18 = 9x - 18

Now you would have to do inverse operation 

18 = 9x - 18
+18       +18

36 = 9x 

Now you would divide 9x into 36 to isolate the variable

36 / 9x = 4
x = 4


7 0
3 years ago
Read 2 more answers
Gavin was thinking of a number. Gavin doubles it and adds 6.6 to get an answer of 9. Form an equation with
Debora [2.8K]

Answer:

(9-6.6)÷2=x

Step-by-step explanation:

Do it in reverse from 9 all the way to x.

7 0
2 years ago
Read 2 more answers
Given the equation 4x2 − 8x 20 = 0, what are the values of h and k when the equation is written in vertex form a(x − h)2 k = 0?
Westkost [7]

The vertex form of the given quadratic equation is

4(x-1)^{2} + 16 =0.

According to the given question.

We have a quadratic equation

4x^{2} -8x + 20 = 0

Since, for the standard quadratic form is ax^{2} +bx + c = y, the vertex form of a quadratic equation is y = a(x -h)^{2} + k where (h, k) is the vertex.    

And h and k can be calculated as

h = -b/2a and y = k

So, for the given equation 4x^{2} -8x + 20 =0 the vertex (h, k) is given by

h = -(-8)/2(4) = 8/8 = 1   (X coordinate of vertex)

and,

y =4x^{2} -8x+ 20

substitute x = 1 in the above equation for the value of k

Y = 4(1)(1) - 8(1) + 20

⇒ Y = 4 - 8 + 20

⇒ Y = -4 + 20

⇒ Y = 16

so, k = 16          (Y coordinate of vertex)

Now, substitute the value of a, k and h in y = a(x-h)^{2} + k.

⇒  0 =4(x-1)^{2} + 16

Therefore, the vertex form of the given quadratic equation is

4(x-1)^{2} + 16 =0.

Find out more information about vertex form of a quadratic equation here:

brainly.com/question/12223454

#SPJ4

6 0
1 year ago
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