3 years ago

Use the following function rule to find f(24). f(x) = x 2 − 9 f(24) =

Mathematics

1 answer:

marta [7]3 years ago

7 0

Answer:

567

Step-by-step explanation:

I'll assume the equation is:

f(x) =x^2− 9 [assumes the "x2 is meant to be x^2]

f(x) =x^2− 9

f(24) = (24)^2 - 9

f(24) = 576 - 9

f(24) = 567

You might be interested in

The vertex of the functions graph is given. Find c. y=2x^2-6x+c;(3/2, 0.5)

d1i1m1o1n [39]

You would best do this by completing the square on the quadratic and subbing in the vertex they give you, like this:
$2(x- \frac{3}{2})^{2} = \frac{18}{4}-c$
Since the y coordinate of the vertex is 1/2 and we need to solve for c, set the $\frac{18}{4}-c$ equal to 1/2 and solve for c, which is the whole point of what we are doing, right?
$\frac{18}{4}-c= \frac{1}{2}$ and $\frac{18}{4}- \frac{2}{4}=c$
$\frac{16}{4}=c$ and c = 4. So that's our answer!

5 0

4 years ago

I need help with this

Katarina [22]

Answer:

-8.5

Step-by-step explanation:

-4x+8=42

-4x=42-8

-4x=34

x=34/-4

x=-8.5

8 0

4 years ago

Christian has $6 in his wallet and wants to spend it on apples.The apples cost $1.25 per apple.How many apples can Christian buy

svlad2 [7]

So you can set this problem up like 6+ 1.25x because Christian has $6 in his wallet that is the total so we can leave it so far by itself without a variable. Now on the other hand, the apples Christian wants to buy is $1.25 per apple it is x because if it is more than 1 that is each so in math we represent it with a variable of just x . Hoped that helped :)

3 0

4 years ago

Read 2 more answers

I need to solve this algebra expression

Art [367]