Um it is 7.5 so..........
Answer:
its 34
Step-by-step explanation:
Let the sons age be x years then
- the fathers age is 2x + 5 years, So:-
2x + 5 - x = 25
x = 25 - 5 = 20
The father is 2 (20) + 5 = 45 years answer
Answer:
(-6,4)
Step-by-step explanation:
If this is the system of equations here is how:
solve for 1 vairuble in the first equation, and plug that it to the other.
Answer:
A=z
B=-2
C=0
D=30
Step-by-step explanation:
First lets simply the equation
21 - (2x +3)2 + 4(1-1) + z^3
21 - (2x^2 + 9) + 4(0) + z ^3
21 - 2x^2 + 9 + z^3
- 2x^2 + z ^3 + 30
This means that:
A=z
B=-2
C=0
D=30