Question

question 9: a cruise ship made a trip to vancouver and back. the trip to vancouver took 15 hours, and the trip back took 12 hours. the ship averaged 20 km/h (kilometers per hour) on the trip back. what was the ships average speed on the trip to vancouver? type your numerical answer below. question 10: henry has a fenced yard in the shape of a rectangle with a perimeter that measures 242 feet. if the width of the yard measures 51 feet, what is the length? (blank) feet type your numerical answer below.

Explanation:

for Question 9:

Step1: Calculate return trip distance

Distance = speed × time = $20 \, \text{km/h} \times 12 \, \text{h} = 240 \, \text{km}$

Step2: Find speed to Vancouver

Speed = distance / time = $240 \, \text{km} / 15 \, \text{h} = 16 \, \text{km/h}$

for Question 10:

Step1: Use perimeter formula

Perimeter $P = 2(l + w)$ → $242 = 2(l + 51)$

Step2: Solve for length

Divide by 2: $121 = l + 51$ → $l = 121 - 51 = 70$

Answer:

16 km/h
70 feet