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Aneli [31]
3 years ago
6

Over which interval is the graph of f(x) = –x2 3x 8 increasing?

Mathematics
2 answers:
Pepsi [2]3 years ago
6 0
Since you were able to type that negative, I will assume that
f(x)=-x^2+3x+8

the vertex is where the graph changes from increasing to decreasing or vice verca

find theh vertex
-b/2a is x coordinate of vertex where
f(x)=ax^2+bx+c


a=-1
b=3
-3/2(-1)=-3/-2=3/2

we see that the leading coeficient (a) is negative so the graph opens down
it increases then decreases at the vertex

so from negative infinity to 3/2 is interval

in interval nottaion
(⁻∞,3/2]
mr Goodwill [35]3 years ago
3 0

Answer:A.(-%,1.5)

Step-by-step explanation:

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KonstantinChe [14]

Answer:

You're right

Step-by-step explanation:

Pythagorean Theorem

4 0
3 years ago
The inequality answer
vazorg [7]

The first answer is correct as the dot is on -34.5 and the bar is shaded to its left, therefore, x is less than -34.5 

Hope this helped :)



8 0
4 years ago
Which number line represents the solutions to |–2x| = 4?
OlgaM077 [116]
Hello :
<span>|–2x| = 4
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8 0
3 years ago
Read 2 more answers
If a + b = -6 and x + y + z = -2, what is 8a - 7x - 7z - 7y + 8b
Oxana [17]

Answer:

-34

Step-by-step explanation:

a + b = -6

x + y + z = -2

We want 8a so multiply the first equation by 8

8( a + b) = -6*8

8a+8b = -48

We also want -7x so multiply the second equation by -7

-7(x + y + z) = -2*-7

-7x-7y-7z = 14

Add the two equations together

8a+8b = -48

-7x-7y-7z = 14

-------------------------

8a+8b-7x-7y-7z = -34

Rearranging the order

8a - 7x - 7z - 7y + 8b = -34

5 0
3 years ago
I'm so stuck, I would really appreciate help !
viktelen [127]
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