Holly finds that (11m – 13n + 6mn) – (10m – 7n + 3mn) = m – 20n + 9mn. what error did holly make?
a.) she only used the additive inverse of 10m when combining like terms.
b.) she added the polynomials instead of subtracting.
c.) she only used the additive inverses of –7n and 3mn when combining like terms.
d.) she did not combine all like terms.

Sam claims that cos x =sin y if x and y are congruent angels. is sam correct ?

If olu is twice as old as funmi if the sum of their ages is 60 how old is olu

Consider the following estimates from the early 2010s of shares of income to each group. country poorest 40% next 30% richest 30% bolivia 10 25 65 chile 10 20 70 uruguay 20 30 50 1.) using the 4-point curved line drawing tool, plot the lorenz curve for bolivia. properly label your curve. 2.) using the 4-point curved line drawing tool, plot the lorenz curve for uruguay. properly label your curve.