The answer to that question is 15.51
I will try to solve your system of equations.
3
x
−
4
y
=
2
;
9
x
−
12
y
=
6
Step: Solve
3
x
−
4
y
=
2
for x:
3
x
−
4
y
+
4
y
=
2
+
4
y
(Add 4y to both sides)
3
x
=
4
y
+
2
3
x
3
=
4
y
+
2
3
(Divide both sides by 3)
x
=
4
3
y
+
2
3
Step: Substitute
4
3
y
+
2
3
for
x
in
9
x
−
12
y
=
6
:
9
x
−
12
y
=
6
9
(
4
3
y
+
2
3
)
−
12
y
=
6
6
=
6
(Simplify both sides of the equation)
6
+
−
6
=
6
+
−
6
(Add -6 to both sides)
0
=
0
Answer:
Infinitely many solutions.
Answer: 6.28 feet
Step-by-step explanation:
Area of the lens= πr^2
Since area has been given as 3.14
3.14 = πr^2
Note that π = 3.14
3.14 = 3.14r^2
r^2 = 3.14/3.14
r^2 = 1
r = ✓1
r = 1
The radius of the lens is 1
Circumference of the lens= 2πr
= 2 × 3.14 × 1
= 6.28 feet
