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4 years ago

Evaluate f(3) x(5x-9)

Mathematics

1 answer:

bezimeni [28]4 years ago

7 0

<h3>Answer:</h3>

<h3>Step-by-step explanation:</h3>

Put 3 where x is, then do the arithmetic.

... f(x) = x(5x -9)

... f(3) = 3(5·3 -9) = 3(15 -9) = 3·6

... f(3) = 18

_____

Your calculator can do this, too.

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Alenkasestr [34]

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Step-by-step explanation:

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3 years ago

Read 2 more answers

What is the solve for r 9 = -3 -Зr?

mihalych1998 [28]

Answer:

Hello the answer is - 4

Step-by-step explanation:

$9 = - 3 - 3r \\ 9 + 3 = - 3r \\ - 3r = 12 \\ r = \frac{12}{ - 3} = - 4$

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3 years ago

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Pleaassseeeee helpppppp,,,,!!!!!!

Flura [38]

Surface Area (SA) of a Cylinder formula:
SA = 2*pi*r*h+2*pi*r^2
If you fill in the formula:
SA = 2*3.14*2*9+2*3.14*2^2
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SA = 6.28*18+6.28*4
SA = 113.04 + 25.12
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4 years ago

Given f(x) = x − 7 and g(x) = x2 . Find g(f(−1)).

ivann1987 [24]

Answer:

Step-by-step explanation:

$g(f(-1))$ can be found by first finding $f(-1)$ then taking that result and putting it into the function $g$ .

$f(-1)$ means we are going to take the expression $x-7$ and evaluate it for $x=-1$ :

$-1-7$

$-8$

So $f(-1)=-8$ .

So we have this so far:

$g(f(-1))=g(-8)=(-8)^2=64$ .

$g(-8)$ was found by replacing $x$ in $x^2$ with $-8$ .

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3 years ago

What is the solution f/4 = 12/5

vesna_86 [32]

Step-by-step explanation:

cross multiply

4(12) = 5f

48 = 5f

48/5 = f

9 3/5

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3 years ago