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maddie0533
17.10.2021 •
Mathematics
Ectangles ABCD and AXYD are similar shapes.
AB = 9m
AD = 6m
Work out the area of rectangle AXYD.
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Ответ:
much
Step-by-step explanation:
hìïîī
Ответ:
Step-by-step explanation:
The formula to find the area of a rectangle is A = l × w. Substitute 15 for 'l' and 4 for 'w' in this formula. Area of a rectangle = 15 × 4 = 60.
i mean its is the answer of the question...
Ответ:
He should row at the speed of 12 kilometers per hour.
Step-by-step explanation:
Given:
An athlete plans to row upstream a distance of 6 kilometers and then return to his starting point in a total time of 4 hours.
The rate of current is 2 km/hr.
Now, to find how fast should he row.
Let speed of the athlete row be
.
Distance = 6 kilometres.
So, to get the time of upstream:
Rate of upstream =
.
Time of upstream =![\frac{x-2}{6}](/tpl/images/0421/6828/724c7.png)
Now, to get the time of downstream:
Rate of upstream=![x+2](/tpl/images/0421/6828/40ea4.png)
Time of downstream =
.
Now, as given total time 4 hours.
Thus, we set an equation:
Time of upstream + time of downstream = total time.
Multiplying both sides by 6 we get:
Dividing both sides by 2 we get:
Therefore, he should row at the speed of 12 kilometers per hour.