Answer:
3 cm
Step-by-step explanation:
Divide the volume by the height
72π/8 = 9π
Now we have the surface area. The surface area is π
, so we reverse it.
Divide the number by π:
9π/π=9
Now we find the square root
3 x 3 is 9, so 3 is the square root and radius.
The answers should be
1. A
2. D
3. C
4. B
5. E
42 divided by 63 is 0.66666666666
Are you sure it's not 63 divided by 42?
Answer:
n = 1
Step-by-step explanation:
<h3><u>
x - 3y = -6</u></h3><h3><u>
2x - y = 3</u></h3><h3><u>
-3y + x = -6 y + 2x = 3 </u></h3><h3><u>
</u></h3><h3><u>
</u></h3><h3><u>
</u></h3><h3><u>
</u></h3><h3><u>
Solve by Substitution :</u></h3><h3><u>
// Solve equation [1] for the variable x </u></h3><h3><u>
</u></h3><h3><u>
</u></h3><h3><u>
[1] x = 3y - 6</u></h3><h3><u>
</u></h3><h3><u>
// Plug this in for variable x in equation [2]</u></h3><h3><u>
</u></h3><h3><u>
[2] 2•(3y-6) - y = 3</u></h3><h3><u>
[2] 5y = 15</u></h3><h3><u>
// Solve equation [2] for the variable y </u></h3><h3><u>
</u></h3><h3><u>
</u></h3><h3><u>
[2] 5y = 15 </u></h3><h3><u>
</u></h3><h3><u>
[2] y = 3 </u></h3><h3><u>
// By now we know this much :</u></h3><h3><u>
</u></h3><h3><u>
x = 3y-6</u></h3><h3><u>
y = 3</u></h3><h3><u>
// Use the y value to solve for x </u></h3><h3><u>
</u></h3><h3><u>
x = 3(3)-6 = 3 </u></h3><h3><u>
Solution :</u></h3><h3><u>
{x,y} = {3,3} </u></h3>
<u></u>
<u>-FrxziteTheLxoser- Hoped this help! :)</u>
<u>If you dont understand the answer is {x,y = {3,3} </u>
