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8. A jetliner can travel 1700 mi from Fargo, ND, to Phoenix, AZ, in 4 hr with a tailwind; but it takes 3 hr to travel 975 mi from Phoenix to Boise, ID, into the same wind. Determine both the wind speed and the air speed (speed in still air) of the plane.

8. A jetliner can travel 1700 mi from Fargo, ND, to Phoenix, AZ, in 4 hr with a tailwind; but it takes 3 hr to travel 975 mi from Phoenix to Boise, ID, into the same wind. Determine both the wind speed and the air speed (speed in still air) of the plane.

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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algebra 2 third edition ISBN: 978-1-64626-475-9 

CHAPTER 3 10t+u = 10u + t = the value 2t 11 and (10r+u)-(10u + t+= t-u= 5= SOLVING SYSTEMS <=16 1=8 (8)+u = 11 U=3 The number is 83. Tor+u- 10u-t= (91-9u=45) (10t+u After sin the syste Check The sum ence of 8 A. Exercises Write and solve a system of equations for each problem. 1. Find two numbers whose sum is 91 and whose difference is 17. 2. The sum of twice a number and a second number is 61. The second numb first. What are the two numbers? 3. Jon invested $10,000 between two different stocks. One stock yielded a 1 yielded a 5% return. How much is invested in each stock if his total returr 4. Georgina has a total of $5000 invested in a savings account that receives C ceives 0.9% APY. How much does she have invested in each account if he is $37.50? 5. Two cars, 360 mi apart, start driving toward each other at the same time an traveling 4 mi/hr faster than the other, how fast is each car traveling? 6. Two speedboats leave the dock at the same time and travel in opposite directions. One travels 9 mi/hr faster than the other. After 2 hr the boats are 170 mi apart. How fast is each boat traveling? 7. Brittany and Hanna can paddle 12 mi upstream in the same time it takes to paddle 28 mi downstream. Determine their paddling rate in still water if the stream flows at 2 mi/hr. 8. A jetliner can travel 1700 mi from Fargo, ND, to Phoenix, AZ, in 4 hr with a tailwind; but it takes 3 hr to travel 975 mi from Phoenix to Boise, ID, into the same wind. Determine both the wind speed and the air speed (speed in still air) of the plane.
Transcribed Image Text:CHAPTER 3 10t+u = 10u + t = the value 2t 11 and (10r+u)-(10u + t+= t-u= 5= SOLVING SYSTEMS <=16 1=8 (8)+u = 11 U=3 The number is 83. Tor+u- 10u-t= (91-9u=45) (10t+u After sin the syste Check The sum ence of 8 A. Exercises Write and solve a system of equations for each problem. 1. Find two numbers whose sum is 91 and whose difference is 17. 2. The sum of twice a number and a second number is 61. The second numb first. What are the two numbers? 3. Jon invested $10,000 between two different stocks. One stock yielded a 1 yielded a 5% return. How much is invested in each stock if his total returr 4. Georgina has a total of $5000 invested in a savings account that receives C ceives 0.9% APY. How much does she have invested in each account if he is $37.50? 5. Two cars, 360 mi apart, start driving toward each other at the same time an traveling 4 mi/hr faster than the other, how fast is each car traveling? 6. Two speedboats leave the dock at the same time and travel in opposite directions. One travels 9 mi/hr faster than the other. After 2 hr the boats are 170 mi apart. How fast is each boat traveling? 7. Brittany and Hanna can paddle 12 mi upstream in the same time it takes to paddle 28 mi downstream. Determine their paddling rate in still water if the stream flows at 2 mi/hr. 8. A jetliner can travel 1700 mi from Fargo, ND, to Phoenix, AZ, in 4 hr with a tailwind; but it takes 3 hr to travel 975 mi from Phoenix to Boise, ID, into the same wind. Determine both the wind speed and the air speed (speed in still air) of the plane.
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