Answer:
x=-6
Step-by-step explanation:
I hope this helps, I write it on a sheet because I don't have pencils and notebook now ^_^
You have the answer and need to work backwards using the equation given
A=1/2bh
A=130
b=26
Plug in these numbers to get
130=1/2(26)h
1/2(26)=13
130=13h
Divide both sides by 13
h=10 meters
Answer:
slope is 2. y-intercept is (0,5)
Step-by-step explanation:
The slope-intercept form is y = mx + b, where m is the slope and b is the y-intercept. y = mx + b. Find the values of m and b using the form y = mx + b.
First subtract the constant to the other side to simplify it for now
y-5=-x^2+6x
Then pull out a common factor so the coefficient is x^2
y-5=-1(x^2-6x)
Next you take 1/2 of the b value (-6) and square it to find your c value
[1/2(-6)]^2=9
After that plug 9 into your equation as your c value
y-5=-1(x^2-6x+9)
Adding the C-value (9) causes the equations to become unbalanced so you need to balance them back out by minus 9 to the other side
y-14=-1(x^2-6x+9)
Now you want to simplify the equation on the right side.
y-14=-1(x-3)^2
Finally you want to add the constant back to the right side.
y=-1(x-3)^2+14 <——— vertex form
maximum=(3,14)
4(-2) - 3 - 2(-2)
-8 - 3 - -4
-11 - -4
= -7
