Answer:
A. line symmetry only.
equilateral triangles have 3 lines of symmetry
The answer is 3a + 2b + 8
To find out, graph them, analyze, and check.
Graph them.
You get the graph below.
Check the answers.
It looks like B matches.
So, the answer is B.
The unknown number is X;
x/6+2=9;
X/6=7;
X=42;
The answer is 42
(a) Using the completing the square method, we need to write into the form of where , so
Expand to find the value of c
Notice that we get back the first two terms, the and the .We need to get rid of the last term of '9' as the term was not in the original form. The final form will look like
Hence,
(b)
(c) , square root both sides plus and minus of 2 Hence