Answer:
its 124 because I did the the math
Answer:
a = 9
Step-by-step explanation:
First we need to add (x^2+3x) to (3x^2+ax),
(x^2+3x)+(3x^2+ax)
Expand
= x^2+3x+3x^2+ax
Collect the like terms
= x^2+3x^2+3x+ax
= 4x^2 + 3x + ax
= 4x^2+(3+a)x
Equate the solution to 4x^2+12x
4x^2+(3+a)x = 4x^2+12x
Comparing the like terms on both sides
(3+a)x =12x
3 + a = 12
a = 12 - 3
a = 9
Hence the value of a is 9
Subtract 15 from both sides
You want to focus on isolating the variable (x)
Answer:
-4 < x < 3
Step-by-step explanation:
<u>Information from Parts 1-4 of the same question:</u>
brainly.com/question/28193969
<u>Information from Parts 5-8 of the same question:</u>
brainly.com/question/28193994
<h3><u>
Part (9)</u></h3>
The values of x for which g(x) < f(x) are the values of x between the points of intersection of the two functions: points D and A.
From part (2) of the question, we found that A = (3, 0).
From part (5) of the question, we found that D = (-4, 7).
Therefore, the values of x for which g(x) < f(x) are -4 < x < 3.
In interval notation this is: (-4, 3).