Answer:
In D
Step-by-step explanation:
in d you can place the lamp there
Easy
set to zero
those are the roots or xintersepts
(x+1)(x+4)(x-7)=0
x+1=0
x=-1
x+4=0
x=-4
x-7=0
x=7
xints are (-4,0) (-1,0) (7,0)
<span>The total surface area is SA = 6 </span>×

;
SA = 6 ×

= 6 × 81 = 486

;
Answer:
<h3>15</h3>
Step-by-step explanation:
<h2>you need to find the lcf(least common factor) of the two numbers which is 15</h2>