8.379 as a mixed number is 8 and 379 over 1000.
379
8 --------
1000
Answer:
x = -0.5 or x = 2
Step-by-step explanation:
Finding solutions graphically is often easier if the equation can be put in the form f(x) = 0. Here, we can do that by subtracting the right-side expression to give ...
(-2x^2 +2) -(-3x) = 0
This could be put in standard form, but there is no need. A graphing calculator can deal with this directly.
The solutions are x = -0.5 and x = 2.
Answer:Teo is 6 and Richard is 25
Step-by-step explanation: Let R and T stand for Richard and Teo's ages. We are told:
R+T=31
R=2T+13
Substitute:
R+T=31
2T+13+T=31
3T+13=31
3T=18
T=6
Since R+T=31, R+6=31, and R = 25