4) 1 mi/6min * 60 min/1h = 1/10 mi/h = 0.1 mi/h
5) 175 mi *1 h/50 mi = 3.5 h
6) Mr. Smith - 9 min -from school to the park.
Mr. McNeil walks twice as fast, that means if s is a speed of Mr. Smith,
then 2s is a speed of Mr. McNeil.
Distance from school to the park = 9*s, distance from school to the park and back = 2*9*s.
Time= Distance/Speed
For Mr. McNeil:
Time from school to the park and back= distance from school to the park and back/ speed of Mr. McNeil = 2*9*s/2s = 9 min.
Answer:
106 km / hour
Step-by-step explanation:
Givens
Total time: 6 hours
Total distance: 1356 km
First bus rate: r
Second bus rate: r - 14
Formula
d = r * t
Solution
r*6 + (r - 14)*6 = 1356 Remove the brackets
6*r + 6*r - 84 = 1356 Add like terms
12r - 84 = 1356 Add 84 to both sides
12r + 84 - 84 = 1356-84 Combine
12r = 1272 Divide by 12
r = 1272/12
r = 106 km/hr
21000
1000ml = 1 L
so
21 × 1000 = 21 000 milliliters
Answer: A) 23.9
Step-by-step explanation:
volume of a shape means the area of its base multiplied by its height
so , the base here is a right angle triangle it's area equals 1/2*b*h = 1/2*3*6=9 m² and the prism height is 2.65.
therefore the volume is 2.65*9