As a procedure is repeated again and again, the relative frequency of an event tends to approach the actual probability. this is known as

Tina practice piano for 15 hours last month and 45 hours this month use multiplication to write a statement comparing me i was tina practice during the two months use addition to write a statement comparing the hours tina practice during the two months

3x + 4y = 5 x- 3y = -7 solve by substitution

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