Answer:
Option 2 ( 1,-10)
Step-by-step explanation:
The two equations are y = -x²-5x-4 -----(1)
and y = -x²+9x-18-------(2)
To get the solution of these lines we will substitute the value of y form equation 1 to 2.
- x² - 5x -4 = -x²+9x-18
Now by collecting similar terms on each side.
-x² -5x + x²-9x = -18 + 4
-14x = -14
14x = 14
x = 1
By putting the value of x in equation 1.
y = -1 - 5 - 4 = -10
So the solution is (1, -10)
Therefore Option 2 is the correct answer.
Each noisemaker costs just over $1.00. Hope this helps!
the question does not present the options, but this
does not interfere with the resolution
let
x-------> the length of the garden
y-------> the width of the garden
A-------> Area of the garden
we know that
A=x*y
A=120 ft²
for x=12 ft
120=12*y-----------------> y=10 ft
but
<span>the length of the garden to be more than 12 feet
so
</span>
x > 12 ft
therefore
y < 10 ft
Hence
the answer is
The width of the garden <span>must be less than 10 ft (width < 10 ft)</span>
