The answer is 21 groups.
7/1 ÷ 1/3 flip the signs on 1/3
now just multiply across...
7/1 × 3/1
21/1
21
Answer:
B and E
Step-by-step explanation:
trust me its correct
Answer:

Step-by-step explanation:
x and 52 are supplementary, so they add up to 180°

the sum of the interior angles in an ngon is (n-2)*180
so if the sum of the interior angles is 2880, then
2880=(n-2)*180
solve for n
divide both sides by 180
14=n-2
add 2 to both sides
16=n
n=16
Answer:
D
Step-by-step explanation: