Answer:
D
Step-by-step explanation:
the answer's 1.19?........
Perimeter of triangle = all sides added up
3a + 4 + 2a - 7 + 9a + 11
now add like terms
3a + 2a + 9a = 5a + 9a = 14a
4 - 7 + 11
= -3 + 11 = 8
so we have 14a + 8
as our simplest expression
Answer:
8
Step-by-step explanation:
10+8-3+5-12=
3+5=8
8/20 =.4
.4 goes to 40% bc you move the decimal over twice
If the circumference of a circle is tripled, the area increases hugely. Hope this helps!