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Musya8 [376]
3 years ago
11

QF Q6.) Find the function for a.

Mathematics
2 answers:
Sophie [7]3 years ago
6 0
(fоg)(x)=f(g(x))
=f(4x^2-3)
=2(4x^2-3)-4
=8x^2-6-4
=8x^2-10
irakobra [83]3 years ago
5 0
The function for a is (f o g) (x) = 8x^2-10.



Explanation

=========================
f(x)=2x-4, g(x)=4x^2-3, (f o g)=f(g(x))  

I already knew that the g of x is equal to 4x^2-3 so I substitute inside of the g of x

g(x)=4x^2-3 =======> f(x)=4x^2-3 =============> 2(4x^2-3)-4 

simplify it 
 
2(4x^2-3)-4  =======> 8x^2-6-4 =========> 8x^2-10

(f o g) = 8x^2-10


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Elan Coil [88]

Let us say that:

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B = age of Ben

 

From the problem, we make the equations:

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Simplifying eqtn 2:

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3 years ago
A car takes 4 hours to cover a certain distance, travelling at a speed of 120 km/h. How long will the car take if it travels at
muminat

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