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yulyashka [42]
3 years ago
15

The sum of 3x^2 +5x-6 and -x^2+3x +9 is

Mathematics
1 answer:
gladu [14]3 years ago
6 0
The answer to the first one is 11x-6 (I think) sorry but idk the second question
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(x + 2)(x2 + 5x + + 1)
butalik [34]

Answer:

{x}^{3}   + 7 {x}^{2}  + 11x + 2

hope it's helpful ❤❤❤❤❤❤

THANK YOU.

#

6 0
3 years ago
Help I need the answers in 20 minutes
Gelneren [198K]

2. 5 hours

3. $200

4. 9.5 hours. If it has to be whole numbers, 10 hours

Hope that helps!

<em>-scsb17hm</em>

6 0
3 years ago
Read 2 more answers
6 cm
Svetach [21]

Answer:

3 cm base 4 cm height

Step-by-step explanation:

6 0
3 years ago
The following function represents the profit P(n), in dollars, that a concert promoter makes by selling tickets for n dollars ea
Gre4nikov [31]
A) zeroes

P(n) = -250 n^2 + 2500n - 5250

Extract common factor:

P(n)= -250 (n^2 - 10n + 21)

Factor (find two numbers that sum -10 and its product is 21)

P(n) = -250(n - 3)(n - 7)

Zeroes ==> n - 3 = 0  or n -7 = 0
Then n = 3 and n = 7 are the zeros.

They rerpesent that if the promoter sells tickets at 3  or 7 dollars the profit is zero.

B) Maximum profit

Completion of squares

n^2 - 10n + 21 = n^2 - 10n + 25 - 4 = (n^2 - 10n+ 25) - 4 = (n - 5)^2 - 4

P(n) = - 250[(n-5)^2 -4] = -250(n-5)^2 + 1000

Maximum ==> - 250 (n - 5)^2 = 0 ==> n = 5 and P(5) = 1000

Maximum profit =1000 at n = 5

C) Axis of symmetry

Vertex = (h,k) when the equation is in the form A(n-h)^2 + k

Comparing A(n-h)^2 + k with - 250(n - 5)^2 + 1000

Vertex = (5, 1000) and the symmetry axis is n = 5.



8 0
3 years ago
How to do this question -14=k-4
Furkat [3]

Answer: hope this helps .

Step-by-step explanation:

3 0
3 years ago
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