Answer:
17 and 10
Step-by-step explanation:
Write the problem as an equation.
a+b=27
a=b-7
Where a and b are the two numbers you are trying to find. You could use any variables. Then solve.
b+(b-7)=27 Sub (b-7) for a
2b-7=27 Group like terms
2b=34 Add 7 to both sides
b=17 Divide both sides by 2.
Because b=17, a must be 10.
Answer:
F(x) = - 2/5x - 11
Step-by-step explanation:
F(x) = - 2/5x + c
-9 = - 2/5(-5) + c
-9 = 2 + c
- 11= c
F(x) = - 2/5x - 11
15. 10:15 or 10 to 15
16. 55:11 or 55 to 11
17. 4:8 or 4 to 8
18. 13:65 or 13 to 65
It represents -2,but it's not exactly proven to be right
Answer:
Step-by-step explanation:
Consider the quadratic expression
First, find its discriminant:
Note that 
then 
Use quadratic formula to find the roots:
Now, given quadratic expression is equivalent to
