Only one question .who knows about this plz "find the measures indicated. round to the nearest tenth".

a = 5.3

<C = 42°

Step-by-step explanation:

<C = 180  - (60 + 78)

<C = 42°

Law of sines:

a/sin(60) = 6/sin(78)

a = sin(60)*6 / sin(78)

a = 0.866 * 6 / 0.978

a = 5.3

graph b

step-by-step explanation:

one solution- graph a (clear intercepting point.)

no solution- graph b (they're parallel, there will never be a point of interception.)

infinite solutions- graph c (all points intercept.)

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