Answer:
Susan is 3 years and Debbie is 8 years old. after 2 years Susan will be 5 Years and Debbie will be 10 years old
Step-by-step explanation:
let the present age of Susan be x years then Debbie is x+5 years
in 2 years
x +2 = x+5+2/2
x+2=x+7/2
2x +4 = x+7
x=3
It's 7.4 because the 3 doesn't round the 4 up.
Answer:
a=3x+b/4-x
Step-by-step explanation:
I dont know which variable you're supposed to solve for. But here's how i got the answer above:
Divide each term in a(4-x)=3x+b by 4-x
a(4-x)/4-x=3x/4-x+b/4-x
Then, cancel the common factor of 4-x, giving you
a=3x/4-x+b/4-x
Finally, combine the numerators over the common denominator,
giving you a=3x+b/4-x
Dat is 4th degree because x is raised to the 4th power and that is the highest power of the placholder
4th degree
