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10.01.2020 •
Mathematics
The height of a wave in california varies directly with the seconds that pass by. at 4 seconds, the wave is 6 feet high. how many seconds will give you a wave that is 10 feet high?
a.y = 2/3x
b. 6
c. 6.6
d. 7
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Ответ:
After 6.6 seconds will give you a wave that is 10 feet high.
Given ;
The Height of a wave in California varies directly with the seconds that pass by.
At 4 seconds, the wave is 6 feet high.
We have to find : Time taken to give you a wave that is 10 feet high.
Equation of direct variation between x and y =
.
Let Time taken to give you a wave that is 10 feet high be x.
Then ,
Putting the values in the equation of direct variation ;
x =![\frac{20}{3}](/tpl/images/0449/2415/e3023.png)
x = 6.6
Hence, after 6.6 seconds will give you a wave that is 10 feet high.
For the more information about Equation of direct variation click the link given below;
link
Ответ:
c. 6.6 seconds
Step-by-step explanation:
Equation of direct variation between x and y :![\dfrac{x_1}{y_1}=\dfrac{x_2}{y_2}------(1)](/tpl/images/0449/2415/19bd1.png)
Given : The Height of a wave in California varies directly with the seconds that pass by.
At 4 seconds, the wave is 6 feet high.
To find : Time taken to give you a wave that is 10 feet high.
Let Time taken to give you a wave that is 10 feet high. be x.
Put
in (1)
Hence, after 6.6 seconds will give you a wave that is 10 feet high.
Correct answer is c. 6.6 seconds .
Ответ:
Step-by-step explanation: