13-4x=1-x
13=4x+x=1-x+x
13-3x=1
13-1-3x=1-1
12-3x=0
12=3x
12/3=3x/3
4=x
Therefore, x=4
The graphs of the two equation are attache. The red curve represents the graph of the equation

while the blue curve represents the graph of the equation

.
Answer:
24 cm and 11 cm
Step-by-step explanation:
GIVEN: The area of a triangular flag is
. Its altitude is
longer than twice its base.
TO FIND: lengths of the altitude and the base.
SOLUTION:
Let the altitude and the base of flag be
and 
According to the question

area of triangle 

Solving equation we get
then 
Hence the lengths of altitude and base of triangular flag is 24 cm and 11 cm respectively.
(a) Without solving the equation we can't determine whether its true or false.
(b) If x = 3
4x + 1 = 2x + 5
4(3) + 1 = 2(3) + 5
12 + 1 = 15 + 5
13 = 20
No, if x = 3, the equation will not be true.
(c) 4x + 1 = 2x + 5
4x - 2x = 5 - 1
2x = 4
x = 4/2
x = 2
This shows that x = 2 makes the equation true.
Answer:
The answer to this question is C.