Find the common difference for the sequence shown.
56, 49, 42, 35,
о -12
.
-
-
оо
карта
та на
нти
2
ана

1; 35 is the ratio

step-by-step explanation:

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.

c

step-by-step explanation: easy math

the answer is b.

64

step-by-step explanation:

c=2πr=2·π·8≈64