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Gnom [1K]
3 years ago
15

F (n)=-3n^2-4n Find f(4)

Mathematics
2 answers:
defon3 years ago
7 0

Answer:

144

Step-by-step explanation:

f(4)=3*4^2

f(4)=12^2

12*12=144

sertanlavr [38]3 years ago
6 0
ANSWER
-64

STEPS
f(4) = -3(4)^2 - 4(4)
-3 * 4^2 - 16
-48 - 16 = -64
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What is the solution set of the system of equations x+y=5 and y=x^2-25
riadik2000 [5.3K]
The solution set is basically when are they equal. to figure this out we must set them equal. So so we will move some stuff around

x+y=5
y=5-x

y=x^2-25

we know that when they are equal their x and y values are equal. So so we know that their y values are the same so we can say:

y=y

this does not direarly help but looking above we know what both of the y's equal. so:

5-x = x^2-25

we want to set this equal to zero

0 = x^2 +x - 30

now we factor

0 = (x + 6) * (x - 5)

the only way to multiply 2 things together and get zero is for one of those things to equal 0. So so we know that to be zero one of the answers in parenthesis has to equal 0. so:

0 = (x + 6 =0) * (x - 5=0)

So now we solve for both parenthesis

x+6=0
x=-6

x-5=0
x=5

x=-6,5
6 0
4 years ago
Determine the direction this parabola opens:<br> Y=x^2+2x+8<br><br> Down or Up
rewona [7]
Hello there!

You need to find an online calculator that will help you graph them.

Answer: The direction is open UP


See the graph bellow!

5 0
4 years ago
Read 2 more answers
What is the slope?
ANTONII [103]

Answer:

1/3

Steps:

The line rose 10 values (up) and went 30 values higher (to the right), so you divide 10/30 and end up with 1/3

Step-by-step explanation:

6 0
3 years ago
I'll add a photo of the problem! ​
eduard

Answer: D

Step-by-step explanation:

7 0
3 years ago
F(4) =
Alex787 [66]

Function f(4) = -10 and if g(x) = 2 , x = 0.

To find f(4), we will observe the graph of f(x).

According to the graph of f(x),

when x = 4, y is -10 which means when x is 4 value of f(4) is -10.

To find the value of x when g(x) is 2, we will observe the graph of g(x).

According to the graph of g(x),

when y = 2, x is 0 which means that when x is 0, the value of g(x) is 2.

Hence, f(4) is -10 and x = 0 when g(x) = 2.

To learn more about Function here:

brainly.com/question/14418346

#SPJ1

7 0
1 year ago
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