Sarah wants to round 543 to the nearest ten. what 2 ten does 543 come between

Let w=23 . what is the value of w + 45 ?

According to the 2008 u.s. census, california had a population of approximately 4 × 10^7 people and florida had a population of approximately 2 × 10^7 people. which of the following is true? a. the population of florida was approximately two times the population of california. b. the population of florida was approximately twenty times the population of california. c. the population of california was approximately twenty times the population of florida. d. the population of california was approximately two times the population of florida.

Ab based on the given diagram, if m_1 = 60° then m 2 = 30 60 90 180