Answer:
Step-by-step explanation:
First add 45 and 78 to find the total weight in grams.
45 + 78 = 123
Then find the weights that will work 1 100, 2 10, 3 1,
So y=12x. All you need to do is plugging in x=3;
y = 12(3) = 36
So answer is B.
For each of the problems, twice the angle formed by the chords is equal to half the sum of the angles of the arcs.
So, for the first problem, we have

, so

.
For the second,

, so

.
For the last problem,

, so

.
Feel free to comment below if you have any questions!
Step-by-step explanation:
all......................
Answer:
B.
the complementary angles form a right angle with the shared ray