3 years ago

The function f(x) varies directly with x and f(x)=12 when x=8

Mathematics

1 answer:

malfutka [58]3 years ago

4 0

F(x) = kx
12 = 8k
k = 12/8 = 3/2

Required equation is f(x) = 3/2 x

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James has $5.00 more than three times what Catherine has. Together they have $41.00. How much does each student have?

Tpy6a [65]

Hey.

acc'g to the conditions :

Let Catherine has x
and James has 5 + 3x

Then,

$5 + 4x = 41 \\ \\ \implies 4x +5 -5 = 41-5 \\ \\ \implies 4x = 36 \\ \\ \implies x= \dfrac{36}{4} \\ \\ \implies x = 9$

Hence

• Catherine has = x = $9,
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2 years ago

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elena-s [515]

X-x-2/6=x-7/3+2/3
-2/6+7/3-2/3=x
x= -2/6+5/3
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