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zlopas [31]
3 years ago
6

A cylindrical juice glass is 8 centimeters tall and has a radius of 3 centimeters. If the glass is full, which of the following

is closest to the volume of the filled portion? A) 28 cm C) 170 cm B) 226 cm D) 98 cm PLEASE HELP!​
Mathematics
1 answer:
Nonamiya [84]3 years ago
4 0

Answer:

226

Step-by-step explanation:

You first have to find the volume of the cylinder, which you would do 3 squared, which is 9, times 8, which is 72, and then times pi, which gives you 226.1946711. Since they want the closest volume to that number, it would just be 226. If you are confused on the equation, the equation for the volume of a cylinder looks like this:  V=\pi(r^{2})(h) \\, where r is the radius and h is the height.

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Solve the system of equation below x+y+z=2 x-y+5z=6
mamaluj [8]
X + y + z = 2
x - y + 5z = 6

cancelando +y com -y:

x + z = 2*(-5)
x + 5z = 6

-5x -5z = -10
...x +5z = 6
---------------------
-4x = -4 *(-1)
4x = 4
x = 4/4
x = 1

x + z = 2
1 + z = 2
z = 2 - 1
z = 1

x + y + z = 2
1 + y + 1 = 2
2 + y = 2
y = 2 - 2
y = 0 

S: {x, y, z} = {1, 0, 1}


8 0
3 years ago
Seven fifths of a number, z, subtracted from 6 times the same number is 3 .
Alex_Xolod [135]
6z-7z/5=3

(30z-7z)/5=3

30z-7z=15

23z=15

z=15/23
8 0
3 years ago
I needed help on this
Strike441 [17]

Answer:

Step-by-step explanation:

Let Freda's sum = x

Donnie has 3/4 x

He spends 63 dollars. His sum is now

3/4x - 63

Now the equation looks like this

6(3/4x - 63) = x            Remove the brackets

6*3/4 x - 378 =x

6 * 3/4 = 4 1/2

4 1/2 x - 378 = x           Add 378 to both sides

4 1/2 x = x + 378          Subtract x from both sides

3.5 x = 378                  Divide by 3.5

x = 378 /3.5

x = 108

Since x = 108, that's how much Freda had. (She spent nothing).

5 0
3 years ago
6x+9y=15<br> -12x-18y=-30<br> Solve system by elimination <br> Giving 10,pts
larisa [96]

Answer:

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7 0
2 years ago
Write an equation of each line in standard form with integer coefficients.<br> 4. y = 2.4x + 1.8
Nadusha1986 [10]

Answer:

<h2>12x - 20y = -9</h2>

Step-by-step explanation:

The standard form of an equation of a line:

Ax+By=C

We have

4y=2.4x+1.8

Convert

4y=2.4x+1.8          <em>multiply both sides by 10</em>

40y=24x+18          <em>subtract 24x from both sides</em>

-24x+40y=18            <em>change the signs</em>

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3 0
3 years ago
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