C-b=6
solve for c
c=b+6
substitute b+6 for c
b+c=10
b+(b+6)=10
2b=4
b=2
substitute that in to find C
c-b=6
c-2=6
c=8
a+b+c=18
a+2+8=18
a+10=18
a=8
so a=8, b=2, c=8
You have to make all the denominators the same by dividing a number that can be divided by both denominators ex: 4/6 + 1/2 , 4/6= 4/6 , 1/2=3/6
so 4/6 + 1/2 is the same as 4/6 + 3/6
(57/4, 31/4)
This was using system of equations
Answer:The domain of
=
R
−
{
3
}
The range of
=
R
−
{
2
}
Step-by-step explanation:
Finding zeros or setting y ot f(n) equal to zero
and all you have to do is factor it, hoping you know how to do this
5. 0= n^2-2n-15
(n-5)(n+3)= 0
n-5= 0 n+3=0
n=5 and n=-3
6.t^2+6t=27
t^2+6t-27=0
(t + 9) (t-3)= 0
t=-9 and t=3
7. x^2-9x=-18
x^2-9x+18=0
(x-6)(x-3)= 0
x=6 and x=3
8. a^2 - 7a = 30
a^2 - 7a -30= 0
(a-10)(a+3)=0
a=10 and a=-3
hope that helps