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if f =28 when a = 7 find f when a is 10 (direct proportion) ​

Sagot :

Namwanjemacklineelizidn

Answer:

f=40

Step-by-step explanation:

f=28, a=7

[tex]f \infty a \\ f = ka \\28 = k(7) \\ 28 = 7k \\ \frac{28}{7} = \frac{7k}{7} \\ 4 = k \\ k = 4 \\ f = 4a \\ a = 10 \\ f = 4(10) \\ f = 40[/tex]

Hope that this is helpful.

Have a nice day.
F=40
Don’t really know how to explain it tho
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