Answer:
x=-3 or x=3/2
Step-by-step explanation:
We are given the following equation:
2x^2+5x-9=2x
We are asked to find the roots. That means just solve it for x.
2x^2+5x-9=2x
Subtract 2x on both sides:
2x^2+3x-9=0
Let's see if we can put this in factored form.
Compare
2x^2+3x-9=0
and
ax^2+bx+c=0.
a=2, b=3 , c=-9
We have to find two numbers that multiply to be ac and add up to be b.
ac=-18
b=3
What are two numbers that multiply to be -18 and add to be 3?
Say -3 and 6.
So we are going to factor 2x^2-3x+6x-9=0
The first two terms have a common factor of x.
The last two terms have a common factor of 3.
2x^2-3x+6x-9=0
x(2x-3)+3(2x-3)=0
Now we can factor the (x-3) out of those 2 terms there since they share that common factor:
(x+3)(2x-3)=0
(x+3)(2x-3)=0 implies x+3=0 or 2x-3=0.
So we must solve x+3=0 and 2x-3=0
x+3=0
Subtract 3 on both sides:
x=-3
2x-3=0
Add 3 on both sides:
2x=3
Divide both sides by 2:
x=3/2
The solutions are x=3 or x=-3/2
9514 1404 393
Answer:
2.5
Step-by-step explanation:
The graph shows the curve extends downward to y = 2.5 in several places.
2.5 is the minimum value
_____
<em>Additional comment</em>
In this case, we assume the arrows at the ends of the curve mean the curve continues in the same fashion (same period and amplitude) as the part shown. For some graphs, arrows at the ends of the curve mean the graph extends to infinity in that direction.
Answer:
7 up is greatt
3000 * 5000 is 15,000,000
Step-by-step explanation:
7 up is great theres no explanation
One half life 1000 mg to 1000/2 =500 mg
One half life 500 mg to 500/2 = 250 mg
One half life 250 mg to 250/2 = 125 mg
Etc .......
Answer:
Common differnece is- 4
the rate of change is- 4 over 1 which is simplified to 4
Step-by-step explanation:
sorry i dont know how to explain the bottom 2