Answer:
The zeroes are
and ![x=-5](https://tex.z-dn.net/?f=x%3D-5)
On the graph, each of these zeroes represent the x-value where the equation will intersect with the x-axis.
Step-by-step explanation:
We have the quadratic equation ![y=x^2+x-20](https://tex.z-dn.net/?f=y%3Dx%5E2%2Bx-20)
To factor this we need to find two numbers that fulfill the following:
They add up to 1
They multiply to give you -20
These two numbers are -4 and 5
This means that the quadratic equation in its factored form will be: ![y=(x-4)(x+5)](https://tex.z-dn.net/?f=y%3D%28x-4%29%28x%2B5%29)
Now that we have the factored form, we need to set
and solve for x
From this factored form, we can see that when
and
the result will be zero. Just to check we can plug in each of these x values
![(x-4)(x+5)=0\\\\(4-4)(4+5)=0\\\\0*9=0\\\\0=0](https://tex.z-dn.net/?f=%28x-4%29%28x%2B5%29%3D0%5C%5C%5C%5C%284-4%29%284%2B5%29%3D0%5C%5C%5C%5C0%2A9%3D0%5C%5C%5C%5C0%3D0)
![(x-4)(x+5)=0\\\\(-5-4)(-5+5)=0\\\\(-9)*(0)=0\\\\0=0](https://tex.z-dn.net/?f=%28x-4%29%28x%2B5%29%3D0%5C%5C%5C%5C%28-5-4%29%28-5%2B5%29%3D0%5C%5C%5C%5C%28-9%29%2A%280%29%3D0%5C%5C%5C%5C0%3D0)
The result of this confirms that x=4 and x=-5 are indeed the zeroes of this equation.
Each of these zeroes represent the x-value where the equation will intersect with the x-axis.
Present value: P=$420
Annual interest: i=3%=3/100→i=0.03
Compounded monthly→Number of periods per year: n=12
Future Value: F=?
In two months: t=2
F=P(1+i/n)^t
F=$420(1+0.03/12)^2
F=$420(1+0.0025)^2
F=$420(1.0025)^2
F=$420(1.005006250)
F=$422.1026250
Rounded to two decimal places:
F=$422.10
Answer: Option B. $422.10
Answer:R+M=T----T=R+M
Step-by-step explanation:
M=T-R
Add R to each side
R+M=T
Answer:
What is your question good sir
Step-by-step explanation:
Answer:
(1,9)
Step-by-step explanation:
For a function, each x value has only one y value. 2, 3, and 4 are already used up.
(1,9)