Round 3.864 to the nearest tenth. A. 3.9 B. 3.86 C. 4 D. 3.96
Each sentence given below has a capitalized part. Replace that capitalized part with a word that expresses the same idea and rewrite the sentence. 1. Even after the teacher entered the classroom, the boys WENT ON playing. 2. He is in debt because of his HABIT OF SPENDING MONEY WASTEFULLY. 3. The country is passing through a CRITICAL PHASE. 4. His uncle is a famous DESIGNER OF BUILDINGS. 5. The drunkard abused people WITHOUT DISCRIMINATION.
1. continued. 2. extravagance. 3. crisis. 4. architect. 5. indiscriminately.
Emily takes a trip, driving with a constant velocity of 90 km/h to the north except for a 30 min rest stop. If Emily's average velocity is 75 km/h to the north, how long does the trip take?
The average velocity is the ratio of traveled distance and the traveled time: v= L/t=75 If the traveled time is t, then Emily traveled time (t-0.5)h with the speed 90 km/h. Then the traveled distance is: L= 90*(t-0.5) We substitute this relation in the first equation and obtain: 75t= 90*(t-0.5) So, t=0.33h= 19.8 mins Then we can find L (length of the trip): L=24.8 km.