Pls help me with this question and if don't know, pls don't answer. thank you!

m∠DEF = 127°

Step-by-step explanation:

Length of arc is double the inscribed angle formed by two chords or secants meeting at a point on the circle,

By this property,

Measure of Inscribed angle ∠DEF =

(6x + 37) =

12x + 74 = 19x - 31

19x - 12x = 74 + 31

7x = 105

x = 15

Therefore, m(∠DEF) = 6(15) + 37

                                 = 90 + 37

                                 = 127°

i believe the correct answer is option 4.principalities were small territories that were run by russian rulers.

which statement correctly defines principalities in northern asia in the 1200s? principalities were small territories that were run by russian rulers.

hope i could ! : )

u = -(6/7)w

step-by-step explanation:

place all values with 'u' on one side of the equation.

4u + 8w = - 3u + 2w

4u + 3u = 2w - 8w

further simplify the equation by solving the addition and subtraction.

7u = - 6w

make 'u' the independent variable by placing its co-efficient on the right-hand side.

u = - (6/7)w