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## anonymous 4 years ago Starting from 1.5 miles away, a car drives towards a speed checkpoint and then passes it. The car travels at a constant rate of 53 miles per hour. The distance of the car from the checkpoint is given by . At what times is the car 0.1 miles from the checkpoint? Calculate your answer in seconds

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1. PaxPolaris

Wait fill the blank... The distance of the car from the checkpoint is given by _______ ???

2. anonymous

the blank is..... d= 1.5 - 53t

3. PaxPolaris

|dw:1326176875424:dw| Set d= 0.1 & solve for t

4. PaxPolaris

$0.1=1.5-53t$

5. PaxPolaris

$\implies -53t=0.1-1.5=-1.4$$\implies 53t=1.4$$\implies t={1.4\over53}={14\over530}hours$

6. PaxPolaris

60 min in 1 hr .... 60 sec in 1 min $t={14 \over 530} \cancel{hours} \cdot{60 \min \over 1\cancel{hour}}\cdot{60 \sec \over 1 \min}={14\cdot 60\cdot 60 \over 530}sec$

7. PaxPolaris

http://lmgtfy.com/?q=(14%2F530)+hours+in+seconds $\huge t=\ \ 95.09...\ seconds$

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