Answer:
k>12
Step-by-step explanation:
distribute -3 into the parenthesis
-3k-21>-57
add 21 on both sides
-3k>-36
divide both sides by -3
k>12
HOPE THIS HELPS!!!
<span>4x2 + 23x – 72
= (4x - 9)(x+8)
hope that helps</span>
If the diameter is 24, the radius must be 12
√(3x²) = 12
<span>3x² = 144 </span>
<span>x² = 48 </span>
<span>. . . . ._ </span>
<span>x = 4√3
</span>Each edge of the cube is twice that or <span>8√ 3
</span>
Hope this helps