Answer:
The amount that Hannah has is $98
Step-by-step explanation:
Let
x-----> amount that Hannah has
y ----> amount that Francine has
z ----> amount that Peter has
we know that
----> equation A
----> equation B
-----> equation C
substitute equation C in equation B
----> equation D
we have
----> equation A
----> equation D
Solve the system of equations A and D by graphing
Remember that the solution is the intersection point both graphs
using a graphing tool
The solution is the point (98,22)
see the attached figure
Find the value of z
---->
therefore
The amount that Hannah has is $98
The amount that Francine hasis $22
The amount that Peter has is $132
Please solve for x
Factor out x-1.
... (x-1)(1 + x) = 3(x-1)
... (x-1)(x +1 -3) = 0 . . . . subtract the right side
... (x -1)(x -2) = 0 . . . . . . simplify
... x = 1 . . . or . . . x = 2 . . . . use the zero-product rule*
_____
* A product is only zero when one or more of its factors is zero.
x-1+x(x-1)=3(x-1)
x^2-1=3x-3
x^2-3x+2=0
Factor: (x-1)(x-2)=0
Set factors equal to 0:
x-1=0 and x-2=0
x=1 or x=2
Answer:
4x-y= -18
Step-by-step explanation:
y-1=4(x+4)
y-1=4x+16
4x-y=-1-17
4x-y=-18
where A=4 B=-1 and C=-18
Answer:
4x + y = -15
Step-by-step explanation:
y - 1 = -4(x+4)
y - 1 = -4x - 16
y = -4x - 16 + 1
y = -4x - 15
4x + y = -15