The work that Yi did to find the greatest common factor of 42 and 63 is shown below. Factors of 42: 1, 2, 3, 6, 7, 14, 21, 42
Factors of 63: 1, 7, 9, 63

The greatest common factor is 7.

What is Yi’s error?
Yi did not list all the factors of 63.
Yi listed multiples for each number instead of factors.
Yi did not list all the factors of 42.
Yi found the least common multiple

50 min

step-by-step explanation:

they will be decreasing both their times in half

60 / 2 = 30

40/2 = 20

30 + 20 = 50

she gotta workk that a 2

step-by-step explanation:

step-by-step explanation:

(3rd option) - c

t= half of the arc subtended by t.

r= half of the arc subtended by r.  

t+r= half of the arc subtended by t + half of the arc subtended by r= half of 360=180

step-by-step explanation: