SOMEONE PLZ HELP FAST AND SHOW UR WORK ILL MARK BRAINLIEST IF YOU SHOW UR WORK AND ANSWER CORRECTLY

angle C = 90°

angle O = 67°

Step-by-step explanation:

Line AC is tangent to the circle at point C. Since OC is the radius, this means that OC is perpendicular to AC. Since the sum of the interior angles of a triangle is 180°, then

23° + 90 + angle O = 180°

or

angle O = 67°

16.80 times .20= 3.36

step-by-step explanation:

hello from mrbilldoesmath!

answer:

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

discussion:

the trick is to recognize that 343 = 7^3 and 216 = 6^3 and, in general,

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

in our case

343x^3+216y^3   =   (7x)^3 + (6y)^3

so take a = 7x and b = 6y in the above equation to get the answer.

you,

mrb