The sixth-graders at lester's school got to visit either the science museum or the history museum. 21 students picked the science museum and 28 students picked the history museum. what is the ratio of the number of sixth-graders who visited the history museum to the total number of sixth-graders?
a)28: 21
b)42: 28
c)49: 28
d)28: 49

Given: lines a and b are parallel and line c is a transversal. prove: 2 is supplementary to 8 what is the missing reason in the proof? statement reason 1. a || b, is a transv 1. given 2. ∠6 ≅ ∠2 2. ? 3. m∠6 = m∠2 3. def. of congruent 4. ∠6 is supp. to ∠8 4. def. of linear pair 5. ∠2 is supp. to ∠8 5. congruent supplements theorem corresponding angles theorem alternate interior angles theorem vertical angles theorem alternate exterior angles theorem

Which set of lengths could represent the sides of a triangle? a. 3, 7, 10 b. 4, 5, 10 c. 6, 8, 14 d. 12, 6, 7

An elevator travels 310 feet in 10 seconds. at that speed, how far can't his elevator travel in 12 seconds?