Answer:
800m
Step-by-step explanation:
First you multiply 20 by 60 to determine the amount of seconds in 20 minutes, which is 1200. then you divide 1200 by 1.5 to get the distance, which is 800m
9514 1404 393
Answer:
x^2/1 +y^2/81 = 1
Step-by-step explanation:
We know that the equation of a unit circle is ...
x^2 +y^2 = 1 . . . . . equation of a unit circle
We also know that replacing x with x/a in a function will expand the graph by a factor of 'a'. Similarly, replacing y with y/b will do the same in the vertical direction.
An ellipse is a circle that has had different expansion factors applied along its different axes. Here, the given points tell us the center of the ellipse is (0, 0), and that it has been expanded by a factor of 9 in the y-direction and a factor of 1 in the x-direction This means the equation for it would be ...
(x/1)^2 +(y/9)^2 = 1 . . . . . equation for desired ellipse
In the required form, this is ...
If you were to convert meters to yard, 100 meters would be converted to about 109.361 yards.
Answer:
2/5
Step-by-step explanation:
25% is equal to 1/4
Lets think of this as money
If we take .25 and multiply it by 4 we get 100 or 1.00
Lets take 5/20
5/20 is also equal to 25%
For this one, let's change the fraction to an equivalent fraction. To do this I'm going to multiply both the top and bottom by 5.
5*5/20*5
That gets us 25/100
Back to thinking money-- we know that 25/100 is equal to 25%
25/100
We just determined that 25/100 is 25% using the problem above.
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The odd one out-- 2/5
2/5 is equal to 40%
If we think of this fraction as money and we get an equivalent fraction-- 40/100
We can clearly see that that is not 25/100, 1/4, 5/20, or even 25%
Hence making it not equivalent to 25%
Hope this helps! Feel free to ask questions in the comments!