870 g of brass contains 40 percent zinic and the rest is copper. find the mass of zinic and copper in the alloy

Is it true that product of 3 consecutive natural numbers is always divisible by 6? justifyyour answer

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

What three-dimensional solid have 6 rectangular faces, 2 equal bases that are not rectangles and 18 edges