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27.06.2020 •
Mathematics
If y varies directly as x, and y is 18 when x is 5, which expression can be used to find the value of y when xis 11
à - 18 (11)
y-1 (11)
y-(19)(5)
y-1315
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Ответ:
Step-by-step explanation:
y varies directly as x
It means y=kx
y=18 when x=5
y=kx
18=k5
k=18/5
y=? When x=11
y=ky
Substitute the value of k
y=18/5(11)
=18×11/5
=198/5
=39.5
Ответ:
1. 38:57
2. 24:32 or 6:8 or 3:4
3. 10 teaspoons
4. 90 cents
5. for every 4 votes tiffany got, jared got 3