Please help due in 20 minutes!

arc EA = 100°

Step-by-step explanation:

arc AB = 40° x 2 = 80°

arc ED = 20° x 2 = 40°

arc BC = 20° x 2 = 40°

arc EA = 1/2(360° - 80° - 40° - 40°) = 100°

1. 22

2. 1

3. 7

4. 18

step-by-step explanation

e2020 got it right

hello from mrbilldoesmath!

answer:   (7x + 6y) ( 49x^2 - 42xy + 36y^2)

discussion:

in general, the factorization of a^3 + b^3 is

a^3 + b^ 3 = (a + b) ( a^2 - ab + b^2)

in our case note that 343 = 7^3 and 216 = 6^3 so the equation becomes:

343x^3 + 216y^3 = (7x)^3 + (6y)^3

if you think of a (above) as 7x and b as 6y the factorization becomes

343x^3 + 216y^3 =

((7x + 6y) (   (7x)^2 - 7x*6y + (6y)^2)   =

(7x + 6y) ( 49x^2 - 42xy + 36y^2)

you,

mrb

(a + b) (a^2 - a b + b^2)