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stellarik [79]
3 years ago
5

F(x) = -x² + 6 Find f(-3).

Mathematics
2 answers:
stepan [7]3 years ago
6 0

Answer:

Step-by-step explanation:

f(-3)= -(-3)^2+6= -9 + 6 = -3

Delicious77 [7]3 years ago
5 0

Answer:

Step-by-step explanation:

this is a really questuon so instead of x we put -3 so its going to look something like this. (PLUG IN -3 FOR X)

f(-3)= (-3)^2+6

f(-3)= -9+6 (-9 because of -3^2)

then the equation becomes

f(-3)= -9+6

(USING THE RULES) we get -3 as our Final answer

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Pls help me and thank you!
Rudik [331]
Answer : -3/4 ..............

6 0
3 years ago
If cos x=1/2 and 90°
Talja [164]

When I factor[ 2cos (square) - 5cos -3], I get (2cos + 1)(cos - 3). 2cos + 1 = 0, 2cos = -1, cos = -0.5,. Using inv cos on calculator, I get 120 degree related angle.

5 0
3 years ago
Find the unknown side length
Westkost [7]
For any right triangle, we can use the Pythagorean Theorem. The Pythagorean Theorem states that for any right triangle, the legs when squared and added together will be equal to the hypotenuse squared.

In mathematical notation: a^2 + b^2 = c^2

Where the variables a and b are the legs and the variable c is the hypotenuse.

Because we know the two side lengths of the triangle, we can solve for the unknown side.

We know the length of one of the legs and the hypotenuse.

Plug in the values.

10^2 + b^2 = 24^2 \\ \\ 
100 + b^2 = 576 \\ \\ 
b^2 = 476 \\ \\ 


b = \sqrt{476}

So, the square root of 476 is the unknown length.
3 0
3 years ago
Which point would not be a solution to the system of linear inequalities shown
Strike441 [17]

-12,3 ...................................

6 0
3 years ago
PLZ HELP FOR POINTS thank you
Liono4ka [1.6K]

Given : y = -25 and x = -5

We can notice that if we Multiply 'x' with 5 we get 'y'

That is (-5) × 5 = -25

⇒ x multiplied by 5 = y

(a) The Equation that relates x and y is 5x = y

(b) We found that the Equation of this Direct variation is : 5x = y

The Question is to find the value of y when x = 3

The Value of y at x = 3 can be found by simply substituting x = 3 in the equation we found.

⇒ y = 5x

⇒ y = 5 × 3

⇒ y = 15

So, the Value of y when x = 3 is 15

8 0
3 years ago
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