Answer:
x < -1
Step-by-step explanation:
Draw a parabola (the graph) passing trough two x-intercepts -1 and 3 and open up.
A=(απr^2)/360=(απd^2)/1440 (r^2=d^2/4)
α=1440A/(πd^2)
s=απd/360 (where s=arc length) so
s=(1440Aπd)/(360πd^2)
s=4A/d and since A=10mi^2 and d=20mi
s=(4*10)/20
s=2 miles
Answer:
Step-by-step explanation:
we know that
The formula to solve a quadratic equation of the form
is equal to
in this problem we have
equate to zero
so
substitute in the formula
therefore
StartFraction 7 minus StartRoot 65 EndRoot Over 2 EndFraction comma StartFraction 7 + StartRoot 65 EndRoot Over 2 EndFraction
Area of the room = 12 * 15.5 = 186 square feet
This equals 186 / 9 = 20 2/3 square yards
So you have not got enough capet tiles to do the job.
You need another 1 carpet tile to finiush the job.
Answer: y=-3/5x-4
Step-by-step explanation:
We can substitute this into point slope form, which is y-y1=m(x-x1).
y-(-1)=-3/5(x-(-5)
y+1=-3/5(x+5)
y+1=-3/5x-3
y=-3/5x-4
