Answer:
1/6
Step-by-step explanation:
Hope it helps plz give brainliest! :D
Answer:
Perimeter: 18.5
Area: 15
Step-by-step explanation:
P = a + b + c
P = 5 + 6 + 7.5
P= 18.5
A = 1/2bh
A = 1/2*7.5*4
A= 15
7 because 6 and 3/4 is written out as 6.75 and when rounding you look at the number after the decimal and if its 5 and above you round up the number youre about to estimate and if its 5 and below you round down.
Answer:
Step-by-step explanation:
Method 1
we know that
The equation of a vertical parabola in vertex form is equal to
where
a is the leading coefficient
(h,k) is the vertex
we have
(h,k)=(-1,-9)
substitute
Remember that
one root is (-7,0)
substitute and solve for a
therefore
Method 2
I use the fact that the roots are the same distance from the vertex
the distance from the given root to the vertex is equal to
6 units
so
If one root is x=-7
then the other root is
x=-1+6=5
The general equation of the quadratic equation is equal to
we have the vertex (-1,-9)
substitute the value of x and the value of y and solve for a
so
Expanded the equation, complete the square and rewrite as vertex form