Answer:
9
Step-by-step explanation:
Using the rule of radicals
× 
⇔ 
Simplify the radicals
= 
= 
×
= 2
= 
= 
×
= 3
Then
3 +
= 3(2 ) + 3
= 6 + 3
= 9
Answer:
1.67 weeks
Step-by-step explanation:
Let X= time it will take to pave 1 kilometer?
1 week=3/5 kilometer
X week =1 kilometer
Cross multiply
3/5 X= 1
3X= 5
X= 5/3
1.67 weeks
The given plane, 
, has normal vector 
. Any plane parallel to this one has the same normal vector.
Let 
be any point in the plane we want. The plane contains the point (1, 1, -1), so an arbitrary vector in this plane is
and this is perpendicular to 
.
So the equation of the plane is
or equivalently,
2/3n + 5 > 12
2/3n > 12 - 5
2/3n > 7
n > 7 * 3/2
n > 21/2 or 10 1/2
Answer:
the answer is D, because 30/2 is 15.
