Answer:
I believe its B, sorry if im wrong
Step-by-step explanation:
The <span>polyhedron has 12 faces
</span>
If the question is what I think it is, then it's simple. All you need to do is divide 420 by 15; and you'll get the answer: 28.
is the question multiple choice? if not I'd go with absolute value
Let's solve for x.
3
x
+
5
y
=
10
Step 1: Add -5y to both sides.
3
x
+
5
y
+
−
5
y
=
10
+
−
5
y
3
x
=
−
5
y
+
10
Step 2: Divide both sides by 3.
3
x
3
=
−
5
y
+
10
3
x
=
−
5
3
y
+
10
3
Answer:
x
=
−
5
3
y
+
10
3
