6. If the measure of an arc is 68, what is the measure of its central angle?

68

Step-by-step explanation:

Measure of arc = Measure of corresponding central angle

Thus, if the measure of an arc = 68, then the measure of its central angle also = 68

the answer is 68

Step-by-step explanation:

please give brainliest

d

step-by-step explanation:

d

- 2 + 10x³ - 21x² + 19x - 4

step-by-step explanation:

each term in the second factor is multiplied by each term in the first factor

x²(- 2x² + 4x - 1) - 3x(- 2x² + 4x - 1) + 4(- 2x² + 4x - 1) ← distribute

= - 2 + 4x³ - x² + 6x³ - 12x² + 3x -8x² + 16x - 4

collect like terms

= - 2 + 10x³ - 21x² + 19x - 4 ← in standard form