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laylay120
16.12.2019 •
Mathematics
Acontainer ship left the dania pier and traveled toward a navigational buoy. an aircraft carrier left 0.7 hours later traveling 1.4 km/h faster in an effort to catch up to it. after four hours the aircraft carrier finally caught up. what was the container ships average speed?
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Ответ:
Average Speed of Container ships is 8 km/h.
Step-by-step explanation:
Let the Average speed of container ship be 'x'
Now Given:
An aircraft Carrier left 0.7 hours later traveling 1.4 km/h faster in an effort to catch up to it.
Hence speed of aircraft carrier =![x+1.4](/tpl/images/0420/9608/3ea40.png)
After four hours the aircraft carrier finally caught up container ship.
Hence Total time taken by aircraft = 4 hrs.
Since aircraft left after 0.7 hours and after 4 hours it caught the container ship.
Hence time taken by Container ship = 4 + 0.7 = 4.7 hrs.
Now we will find the Distance traveled by both.
Distance can be calculated by product of time and speed.
Distance of aircraft =![4(x+1.4)= 4x+4\times 1.4 = 4x+5.6](/tpl/images/0420/9608/56ae0.png)
Distance of container ship =![4.7x](/tpl/images/0420/9608/c659e.png)
Since both of them are at same place hence distance travveled by both would be similar.
Hence,
Distance of aircraft = Distance of container ship
Substituting the values we get;
Hence Average Speed of Container ships is 8 km/h.
Ответ:
The answers are given below.
Step-by-step explanation:
(1) The first product is 693 × 83 = 57,519.
This can also be written as
231 × 949 = 57,519 or 77 × 2847 = 57,519.
(2) The second product is 910 x 45= 40,950.
This can also be written as
455 × 90 = 40,950 or 91 × 450 = 40,950 or 182 × 225 = 40,950.
(3) The third product is 38 x 84= 3,192.
This can also be written as
19 × 168 = 3,192 or 76 × 42 = 3,192 or 152 × 21 = 3,192.
(4) The fourth product is 409 x 89= 36,401.
We cannot switch the factors here, because both 89 and 409 are prime numbers.
Thus, the answer is completed.