Answer:
A)65°
B)110°
C)50°
D)55°
E)80°
Step-by-step explanation:
Since the angle on a straight line should be 180, you simply subtract the given angles from 180
hope I helped
Some useful relations and identities:



By the first relation, we have

Applying the two latter identities, we get

We can apply the third identity again:

and this is probably as far as you have to go, but by no means is it the only possible solution.
Answer:
81 in
Step-by-step explanation:
The watercolor painting area:
width x length = the formula for the area of a rectangle.
9 x 15= 135
The mat area:
15 + 3= 18
9 + 3= 12
12 x 18 = 216
<u>216 - 135 = 81</u>
Answer:
c. 52
Step-by-step explanation:
since that triangle QRE is a right angle triangle
therefore QE = root 5²_3² = 4 cm " pythagorean "
since triangle PQE is a right angle triangle
therefore PQ= root 4²+6²= 2 root 13 = root 52