Ms. Sandy bought a package of pencils. Out of every 10 pencils​, 9 are black. If there are 70 pencils in the​ pack, what fraction of the pencils in the pack are​ black? What percent of the pencils in the pack are​ black? What fraction of the pencils in the pack is​ black?

Julius sold five times as many computers as sam sold last year. in total, they sold 78 computers. how many computers did julius sell?

Math it's appreciated. (picture provided)

What is the next step in the given proof? choose the most logical approach. a. statement: m 1 + m 2 + 2(m 3) = 180° reason: angle addition b. statement: m 1 + m 3 = m 2 + m 3 reason: transitive property of equality c. statement: m 1 = m 2 reason: subtraction property of equality d. statement: m 1 + m 2 = m 2 + m 3 reason: substitution property of equality e. statement: 2(m 1) = m 2 + m 3 reason: substitution property of equality