-0.4a = 7 - 3
-0.4a = 4
a = -10
Answer:
We need approximately 201 ft of fencing
Step-by-step explanation:
We need to find the circumference of the pool plus the fence
C = 2*pi *r where r is the radius of the pool and the fence
r = 28 +4 = 32
C = 2 * pi * (32)
C = 64 pi
Letting pi =3.14
C = 64*3.14
C =200.96 ft
Rounding to the nearest foot
We need approximately 201 ft of fencing
Subtract 2x from both sides then divide by 6 and x equals 1
Answer:
0 < x < 50
Step-by-step explanation:
We start out with a square (which IS a rhombus for all sides are equal in
length. That's when the diagonals are equal in length, which, by the
Pythagorean theorem equal to
5*√2
C^2=a^2+b^2
=25^2+25^2
Factorise
c^2=25^2 × 2
c=square root of 25^2 × 2
That is
c=√25^2 × 2
=5×√2
As we decrease the angle on the bottom left and increase the angle on
the bottom right, the green diagonal increases to 25+25 or 50, but never gets to 50. The red diagonal shrinks to 0 but never gets to 0.
the lengths of a diagonal can only be in the open interval from 0 to 50. In interval notation that is (0,50) or 0 < x < 50.
F(x)=-2x2+4x-6
f(0)=-2x2+4x0-6
f(0)=-4+0-6
f(0)=-10