What kind of operation is this ? it just says x and a nine.
The answer is 15/100 x 45 =6.75 minutes <span />
Mulitply second equation by 2 and add to first
3y+2z=12
<u>2y-2z=18 +</u>
5y+0z=30
5y=30
divide 5
y=6
sub back
y-z=9
6-z=9
minus 6
-z=3
times -1
z=--3
x=-3
y=6
Answer:
the surface area is 552.92
Step-by-step explanation: